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Comparison

CBT vs DBT vs ACT: what is the difference and which might be right for you?

CBT (cognitive behavioural therapy), DBT (dialectical behaviour therapy), and ACT (acceptance and commitment therapy) are three of the most widely practised and researched psychotherapy approaches used in Canada today. CBT focuses on identifying and changing unhelpful thought patterns. DBT adds acceptance and a structured set of emotional regulation skills. ACT shifts the goal from changing thoughts to accepting them and acting according to your values.

Short answer

You have probably heard these three names. Maybe your doctor mentioned one. Maybe you searched online and came away more confused than when you started. CBT, DBT, ACT: three acronyms that live in the same neighbourhood, overlap in some places, and diverge in others. Understanding what makes them different is not just useful trivia. It is the kind of thing that can help you ask better questions when you are choosing a therapist, and help you go into a first session knowing a little more about what to expect.

This article explains each approach in plain language, looks at what the evidence says about when each one works best, and helps you think through which might be the better fit for what you are carrying right now. It is not a substitute for talking to a clinician, but it is a starting point.

CBT vs DBT vs ACT: at a glance

Before going deeper on each, here is how they compare across the dimensions that matter most when you are choosing a therapy approach.

The rest of this article unpacks each row of that table so the differences make intuitive sense, not just on paper.

CBT vs DBT vs ACT at a glance.
CBT DBT ACT
Core idea Identify & change unhelpful thoughts Accept & change; build distress tolerance skills Accept thoughts; commit to values-based action
Originally for Anxiety & depression Borderline personality disorder; emotion dysregulation Anxiety, depression, chronic pain, OCD
Session format Individual or group; structured, time-limited Individual + skills group + phone coaching Individual or group; flexible length
Key skills Thought records, behavioural activation, exposure Mindfulness, emotion regulation, distress tolerance, interpersonal effectiveness Defusion, acceptance, values clarification, committed action
Strong evidence for Anxiety, depression, OCD, PTSD, insomnia BPD, self-harm, suicidal behaviour, eating disorders, substance use Depression, anxiety, chronic pain, burnout, OCD, health concerns
Works best when Client wants structured, problem-focused work Client struggles with intense emotions or self-harm Client feels stuck or trapped by their inner experience

What is CBT (cognitive behavioural therapy)?

According to CAMH's guide to cognitive behavioural therapy, CBT is "a practical, short-term form of psychotherapy" that helps people develop skills for becoming and staying healthy. It focuses on the here and now: the thoughts, beliefs, and behaviours that are making today difficult, not on reconstructing the past.

The theory at the centre of CBT is that our thoughts, feelings, and behaviours are connected in a loop. A distorted or unhelpful thought ("nothing I do matters") produces a feeling (hopelessness), which drives behaviour (withdrawing from people), which then reinforces the thought. CBT interrupts that loop. The clinician helps you notice the thought, examine whether it is accurate, and replace it with something more balanced.

The main techniques in CBT

  • Thought records. Writing down a distressing thought, the situation that triggered it, and then examining the evidence for and against it. This is the tool most people picture when they hear "CBT."
  • Behavioural activation. Deliberately scheduling activities that give you a sense of accomplishment or connection, particularly useful in depression, where withdrawal reinforces low mood.
  • Exposure therapy. Gradually and systematically approaching feared situations or objects in a controlled way, to reduce avoidance and anxiety over time.
  • Problem-solving. Breaking down a stressful situation into manageable pieces and working through them step by step.

What CBT works well for

CBT has one of the largest evidence bases of any psychotherapy. It is the first-line psychological treatment recommended for depression, most anxiety disorders (including generalized anxiety, social anxiety, panic disorder, and health anxiety), OCD (obsessive-compulsive disorder), PTSD (post-traumatic stress disorder), and insomnia. In Ontario, the government-funded Ontario Structured Psychotherapy (OSP) program is built on CBT for exactly this reason.

Who CBT tends to suit

CBT is often a strong fit for people who prefer a structured, goal-focused approach with clear techniques to practise between sessions. It works particularly well when the difficulty is rooted in identifiable patterns of thinking that can be examined and challenged. It is usually time-limited (often 12 to 20 sessions) and tends to be well-matched to people who are motivated to do some work between appointments.

What CBT is less suited for

CBT can feel mechanical or frustrating for people whose difficulty is less about thought patterns and more about intense emotional states, difficulty in relationships, or a pervasive sense of being fundamentally broken. For those presentations, DBT or ACT may be a better starting point.

What is DBT (dialectical behaviour therapy)?

As CAMH's guide to dialectical behaviour therapy explains, DBT "is an evidence-based model of therapy that helps people learn and use new skills and strategies so that they build lives they feel are worth living." The word "dialectical" refers to holding two seemingly opposite truths at once: that you are doing the best you can right now (acceptance) and that you need to make changes to live the life you want (change).

DBT was developed by American psychologist Marsha Linehan in the 1980s, originally as a treatment for borderline personality disorder (BPD), a condition marked by intense emotional swings, difficulty in relationships, and often self-harm or suicidal behaviour. Linehan noticed that standard CBT, with its emphasis on changing thoughts, felt invalidating to many of her clients. DBT was built to hold acceptance and change in balance.

The four DBT skill modules

Standard DBT teaches four interconnected groups of skills, each designed to address a different dimension of emotional and interpersonal difficulty:

  • Mindfulness. The foundation of all DBT. Paying attention to the present moment, on purpose, without judgment. It is the skill that makes the other three possible.
  • Distress tolerance. Getting through an emotional crisis without making things worse. Techniques like TIPP (Temperature, Intense exercise, Paced breathing, Progressive relaxation), self-soothing, and radical acceptance.
  • Emotion regulation. Understanding what emotions are and what triggers them, reducing vulnerability to intense emotions, and changing unwanted emotional states.
  • Interpersonal effectiveness. Asking for what you need, saying no clearly, and maintaining relationships and self-respect at the same time. Often framed using acronyms like DEAR MAN and FAST.

What DBT works well for

DBT has strong evidence for BPD, self-harm, suicidal behaviour, eating disorders, and substance use. It is increasingly used for any presentation involving significant emotion dysregulation, including depression with strong mood instability, ADHD, and PTSD. Standard DBT is a comprehensive program that includes individual sessions, a skills group (usually once weekly), phone coaching between sessions, and a therapist consultation team. This makes it more intensive than CBT or ACT.

Who DBT tends to suit

DBT is often the right starting point for someone whose life is feeling out of control in a concrete way: self-harm, frequent crises, relationships that repeatedly break down, or emotions that feel completely unmanageable. It is also a good fit for people who have tried CBT and found it too focused on thoughts, without enough address of the intensity of what they feel.

What DBT is less suited for

The full standard DBT program is time-intensive, usually six months to a year of weekly individual sessions plus a skills group. Not all clinicians offer the complete program. Some offer DBT skills training groups or individual DBT without the full complement of components. If your difficulty is primarily about thought patterns or persistent avoidance without strong emotion dysregulation, CBT may be more efficient.

What is ACT (acceptance and commitment therapy)?

The Canadian Mental Health Association's psychotherapy guide describes ACT as similar to CBT, but focused on accepting difficult experiences rather than changing thoughts or behaviours to avoid difficult feelings. That is a fair summary, though it understates what makes ACT genuinely different.

ACT was developed in the 1980s by American psychologist Steven Hayes. It belongs to what clinicians call the "third wave" of cognitive behavioural therapies: approaches that emerged from CBT but shifted the goal from reducing symptoms to building a life that feels meaningful and workable, even with symptoms present.

The core idea is that most human suffering comes not from the presence of painful thoughts and feelings but from the way we fight with them. We try to suppress, avoid, or push away what hurts. ACT calls this experiential avoidance, and argues that it tends to make things worse over time. The alternative is not positive thinking. It is learning to make room for difficult inner experiences while still moving toward what matters to you.

The six core ACT processes

ACT is organized around six interrelated processes that together build what clinicians call psychological flexibility, meaning the ability to respond to difficult experiences with openness and choice rather than rigid avoidance:

  • Acceptance. Allowing thoughts and feelings to be present without trying to control or suppress them. This is not resignation. It is making room.
  • Cognitive defusion. Creating distance between yourself and your thoughts. Noticing a thought as a thought, not as a fact. "I am having the thought that I am worthless" is different from "I am worthless."
  • Present-moment awareness. Being in contact with what is actually happening right now, rather than caught in worry about the future or regret about the past.
  • Self-as-context. Recognizing the part of you that observes your thoughts and feelings, rather than being identical with them. You are not your anxiety. You are the one who notices the anxiety.
  • Values clarification. Getting clear on what genuinely matters to you, not what you think should matter, not what other people expect. Your values are the direction you want to move, not goals to achieve and check off.
  • Committed action. Taking concrete steps in the direction of your values, even in the presence of pain, discomfort, or fear.

What ACT works well for

ACT has a strong and growing evidence base for depression, anxiety disorders, chronic pain, burnout, OCD, eating concerns, and adjustment to serious health conditions. It is particularly useful when the difficulty is less about specific thoughts that can be examined and more about a pervasive sense of being trapped, stuck, or cut off from what matters. Many people who have tried CBT and found it useful but incomplete find that ACT addresses what CBT left untouched.

Who ACT tends to suit

ACT is often a strong fit for someone who has already tried changing their thoughts and found that it helps, but the thoughts keep coming back anyway. It also suits people dealing with chronic situations that cannot be fixed: persistent pain, grief, a health condition, or a demanding life stage. The goal is not to make the pain go away. The goal is to keep living fully alongside it.

What ACT is less suited for

ACT is less structured session-to-session than CBT and requires a reasonable degree of willingness to explore inner experience with curiosity rather than defensiveness. For some people in acute crisis, or for whom a more directive skills-based approach is what is needed right now, DBT or CBT may be the better immediate fit.

How CBT, DBT, and ACT relate to each other

They are not competing philosophies. There are three points on a family tree.

CBT came first. Developed in the 1960s and 1970s by Aaron Beck and Albert Ellis, it built on earlier behavioural therapy by adding the insight that thoughts, not just behaviours, drive emotional difficulty. It became the dominant form of psychotherapy for a reason: the evidence for its effectiveness is substantial.

DBT emerged in the 1980s as a modification of CBT for people for whom standard CBT was not enough. Marsha Linehan added a radical emphasis on acceptance and validation, built in the structured skills training groups, and created the coaching component to help clients use skills in real-life moments of crisis.

ACT also emerged in the 1980s and developed across the 1990s and 2000s. Hayes and his colleagues kept CBT's behavioural emphasis but shifted the goal: instead of changing thoughts, they focused on changing the relationship with thoughts. Psychological flexibility replaced symptom reduction as the primary target.

All three use behavioural techniques. All three take the therapeutic relationship seriously. All three are supported by substantial research. The differences are in philosophy, emphasis, and which presenting problems each is best designed to address.

How do you choose between CBT, DBT, and ACT?

The honest answer is that you often do not have to choose. Many clinicians are trained in more than one approach and will adapt their work based on what you bring to sessions. A clinician skilled in DBT knows CBT. A clinician trained in ACT understands the CBT tradition. The modality is a framework, not a script.

That said, there are some practical guides:

  • If you are dealing with anxiety, depression, OCD, or insomnia and you want a structured, problem-focused approach: CBT is usually the recommended starting point. It has the most evidence for these presentations, and it is available through Ontario's publicly funded Structured Psychotherapy program.
  • If you experience intense, difficult-to-manage emotions, self-harm, or frequent crises: DBT was specifically designed for you. The skills groups are structured and practical, and the program is built to handle the kind of intensity that other therapies can feel too thin for.
  • If you feel stuck, trapped, or cut off from what matters: ACT is often the most useful frame. Particularly if you have tried to think your way out of a situation and found that the thoughts keep returning, ACT offers a different way in.
  • If you are not sure: Ask the clinician you are considering. A good clinician will tell you which approach they think fits your situation and why. That conversation is part of the work.

For more on what the research says about online delivery of these approaches, our piece on is online therapy as effective as in-person walks through the evidence in more detail.

Who delivers CBT, DBT, and ACT in Ontario?

In Ontario, all three approaches are delivered by regulated clinicians, primarily Registered Psychotherapists (regulated by the CRPO) and Registered Social Workers (regulated by the OCSWSSW). Some psychologists (C.Psych) also practise these modalities. The designation tells you the regulatory body responsible for the clinician's practice standards; the approach tells you the framework the clinician is trained in. Both matter when you are choosing.

When looking for a therapist trained in a specific approach, it is worth asking directly during a pre-booking message or a first consultation: "Are you trained in this approach? Do you practise it as a primary framework or as one of several tools?" A clinician will not take offence at that question. It is exactly the right one to ask.

Our guide on how to find a therapist walks through the practical steps of finding a regulated clinician in Ontario whose approach and experience fit what you are looking for.

What does it cost to access CBT, DBT, or ACT in Ontario?

Private sessions with a Registered Psychotherapist trained in any of these approaches typically cost between $130 and $200 per session in Ontario in 2026. Sessions are typically reimbursable under most Canadian extended health benefit plans. For more on what these costs look like and how insurance reimbursement works, our article on how much therapy costs in Ontario covers it in detail.

Under CANADAHEALS, every Canadian's first Saalvio session is free. That means you can try a clinician trained in CBT, DBT, or ACT without it costing you anything to find out whether the fit and the approach are right for you.

Common questions

Can a therapist combine CBT, DBT, and ACT?

Yes, and many do. These approaches are not mutually exclusive. A clinician might use CBT thought records for a client's anxiety, DBT distress tolerance skills during periods of crisis, and ACT values work when helping a client reconnect with what matters. This is sometimes called an integrative approach, and it is common among experienced clinicians.

Is CBT available for free in Ontario?

Yes. Ontario's Structured Psychotherapy (OSP) program offers free, publicly funded CBT for Ontario adults aged 18 and older with depression, anxiety, and anxiety-related conditions. You can self-refer. No family doctor referral is needed. Wait times and program availability vary by region.

How long does each approach take?

CBT is typically the most time-limited, often 12 to 20 structured sessions. ACT is flexible and can run from 8 to 20 or more sessions, depending on the presenting issue and the clinician's approach. Full DBT is the most intensive, usually six months to a year of weekly individual sessions plus a skills group. DBT skills groups alone (without individual therapy) are also offered at many clinics and are shorter in duration.

Can these approaches be delivered online?

Yes. All three approaches have been adapted for and studied in online delivery formats, with research consistently finding comparable outcomes to in-person sessions for most presentations. In Ontario, most Saalvio therapists offer sessions virtually, and virtual sessions are typically covered by extended health benefit plans on the same terms as in-person sessions.

Do I need a diagnosis to access CBT, DBT, or ACT?

Not through a private therapist. You can book directly with a Registered Psychotherapist or Registered Social Worker in Ontario without a diagnosis or a physician referral. The clinician will do their own assessment in the first session or two to understand your situation and determine the best approach. A diagnosis is not required for insurance reimbursement in most Canadian extended health plans, either, though it is worth confirming with your specific plan.

Related on the Saalvio site

Other resources you may find useful

Related reading

Plain-language articles from the Saalvio editorial team on this topic. Start with whichever one feels closest to what you are looking for.

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