Some thoughts grab hold and will not let go. "I'm a burden." "Something bad will happen." "I'm too old to change." When a thought hooks you, it can feel like the plain truth, and it can steer what you do next.

In acceptance and commitment therapy (ACT), the skill of unhooking is called cognitive defusion. It means stepping back so you see a thought as a thought, not as a fact or an order. This lesson gives you six simple ways to do it.¹

Key points

Defusion changes your relationship with a thought, not the thought itself. You do not argue with it or try to push it away.^1,2
The goal is for a thought to feel less believable and less gripping, so you can still do what matters.¹
Short exercises can help. In studies, saying a word over and over for 20 to 30 seconds made a painful self-thought feel less believable.³ Promising
Practice a few minutes a day with small, everyday thoughts before trying the big ones.
If thoughts of suicide hook you, call or text 988 any time. In an emergency, call 911.¹⁰

Why this step matters

Most thoughts pass by without trouble. But some stick, and we get tangled up in them. ACT calls this fusion: being so caught up in a thought that it runs the show.²

When you are fused with "I'll embarrass myself," you may skip the family dinner. The thought may or may not be true. Either way, it has made the choice for you.

Many people try to fight such thoughts or force them out. ACT teaches that trying to get rid of hard thoughts can backfire.² Defusion takes another path. It aims to loosen the thought's grip, rather than change what it says or how often it shows up.¹ You may still have the thought. It just has less power to push you around.

This is different from testing your thoughts in CBT, where you weigh the evidence. Defusion is handy when a thought keeps coming back no matter how often you argue with it.

How to tell you are hooked

You may be hooked when a thought feels like an order or a fact you cannot question. Other signs: you replay the same worry again and again, or you stop doing something you care about because of what your mind says. The first step is simply to notice.

Six ways to unhook, step by step

Start with a mildly upsetting thought, not your most painful one. Try each method and keep the ones that work for you.

Catch the thought. Write it down in a few words, such as "I'm a burden." Rate how much you believe it from 0 (not at all) to 10 (completely).
Add "I'm having the thought that..." Say it slowly: "I'm having the thought that I'm a burden." Then try: "I notice I'm having the thought that I'm a burden." Labeling the thought as a thought is a core defusion step.¹ Notice if the thought feels a little further away.
Name the story. Give yours a name, like "the not-good-enough story" or "the what-if story." When it shows up, say, "Ah, here's the what-if story again."
Thank your mind. Say, "Thanks, mind, for that thought." Thanking your mind, without arguing, is one of the methods ACT therapists use.¹
Repeat one word. Boil the thought down to one word, such as "burden." Say it out loud, quickly, over and over for about 20 to 30 seconds. In studies, a few seconds of this eased discomfort. About 20 to 30 seconds was needed before the thought felt less believable.³
Picture the thought as an object. Imagine the thought has a shape, a size, a color and a speed.¹ Or picture writing it on a leaf and setting it on a gently moving stream. Watch it float away. If it comes back, put it on another leaf.
Rate it again and return to what matters. Rate how much you believe the thought now, from 0 to 10. A drop of even 1 or 2 points counts. Then ask, "What would I do right now if this thought were not in charge?" Use your values from lesson 1 to choose one small action.

Try a silly voice. Some people find it helps to say the thought in a cartoon voice, or sing it to "Happy Birthday." Skip this if it feels like mocking yourself. The aim is kindness, not ridicule.

What the research shows

Most research on defusion by itself comes from short, small experiments.

Word repetition. In two studies, quickly repeating a one-word version of a negative self-thought lowered both discomfort and believability. Discomfort eased after about 3 to 10 seconds. Believability took about 20 to 30 seconds.³
Defusion versus testing thoughts. In a 5-day study, people used either defusion, a CBT-style thought-testing method or no strategy for a personal negative thought. Defusion lowered how believable the thought felt more than the other two. It also made people more willing to have the thought, and the thought popped up less often.⁴

These are small, short studies, so the evidence for defusion on its own is promising, not proven. Promising Experts still debate exactly how defusion works.⁵ Defusion is one part of full ACT, which has more research behind it. See the ACT overview for that.

Try it this week

Your practice for lesson 2

Once a day, spend 5 minutes on one hooking thought. Use the steps above.
Write down the thought and your 0 to 10 belief rating before and after.
At least once, use "I'm having the thought that..." in the moment, when a thought shows up during your day.
At the end of the week, circle the two methods that helped most. Keep them handy for later lessons.

Tips for later life, memory and caregivers

ACT has been tested with older adults. A Dutch trial included 314 people aged 55 to 75 with anxiety. ACT, done partly online and partly with a counselor, helped about as much as CBT, and people were more satisfied with it. The ACT program included noticing thoughts and feelings without judging them.⁶

A few changes can help:

Write your favorite phrase on a card, in large print. "I'm having the thought that..." can sit by your chair or on the fridge.
Practice aloud with someone. A family member or friend can read the steps while you try them.
For family caregivers, thoughts like "I should be doing more" or "I'm failing them" can hook you hard. Naming the story and thanking your mind can give you a little breathing room. See caregiver burnout.

The VA's free ACT Coach app for phones has exercises for observing thoughts and building values-based habits. The VA says it is meant to be used alongside therapy with a provider, not on its own.⁷ The World Health Organization also has a free illustrated stress guide, with audio in many languages, built around a few minutes of practice a day.⁸

Common problems

Doesn't this mean I am ignoring real problems?

No. Defusion helps you see a thought clearly so you can decide what to do. If the thought points to a real problem, like an unpaid bill or a new symptom, unhooking can make it easier to act on it calmly.

The thought came right back.

That is normal. Defusion is not meant to make thoughts vanish.¹ Each time you notice and unhook, you are building the skill. Think of it like a muscle.

I started trying to use it to get rid of the thought.

That is very common. If you find yourself thinking, "Now go away," you have turned defusion into another fight. Gently go back to noticing and letting the thought stay as long as it likes.²

Can I use this for scary, unwanted thoughts that will not stop?

For mild worries, yes. But if upsetting thoughts lead to rituals, checking or a need for reassurance, you may have OCD. That has its own proven treatment. See OCD and exposure and response prevention.

When to get more help

Self-help is not enough for everyone. Talk with a doctor or therapist if thoughts get in the way of daily life for more than a couple of weeks. Do the same if you hear voices or have beliefs others find strange. When you look for a therapist, ask about fees, insurance and sliding-scale costs.⁹ See finding a therapist.

If you have thoughts of suicide, those thoughts deserve care right away, not just unhooking. Call or text 988, or chat at 988lifeline.org. It is free, confidential and open 24/7.¹⁰ Call 911 if you or someone else is in danger now. You can also make a safety plan or visit get help now.

Next lesson: ACT lesson 3: making room for feelings. Or go back to lesson 1: finding your values or the ACT overview.

Sources

Association for Contextual Behavioral Science. The six core processes of ACT. ACBS, accessed October 2026. contextualscience.org
Association for Contextual Behavioral Science. About ACT. ACBS, accessed October 2026. contextualscience.org
Masuda A, Hayes SC, Twohig MP, Drossel C, Lillis J, Washio Y. A parametric study of cognitive defusion and the believability and discomfort of negative self-relevant thoughts. Behav Modif, 2008. DOI
Larsson A, Hooper N, Osborne LA, Bennett P, McHugh L. Using brief cognitive restructuring and cognitive defusion techniques to cope with negative thoughts. Behav Modif, 2016. DOI
Assaz DA, Roche B, Kanter JW, Oshiro CKB. Cognitive defusion in acceptance and commitment therapy: what are the basic processes of change? Psychol Rec, 2018. Springer
Witlox M, et al. Blended acceptance and commitment therapy versus face-to-face cognitive behavioral therapy for older adults with anxiety symptoms in primary care: pragmatic single-blind cluster randomized trial. J Med Internet Res, 2021. JMIR
U.S. Department of Veterans Affairs, National Center for PTSD. ACT Coach. VA Mobile, accessed October 2026. VA
World Health Organization. Doing what matters in times of stress: an illustrated guide. WHO, 2020. WHO
National Institute of Mental Health. Psychotherapies. NIMH, accessed October 2026. NIMH
988 Suicide & Crisis Lifeline. Home page. 988lifeline.org, accessed October 2026. 988 Lifeline

Education only. This page is general information written from the sources listed. It is not medical, legal or financial advice and does not replace a doctor, therapist or lawyer who knows your situation. How we write and check pages.