Most of us who work with OCD have had a client who knows, on some level, that their checking, washing, or mental reviewing doesn't make sense, and who still can't stop. It can be a hard thing to work with, because the reassurance and reasoning we'd usually reach for often make it worse rather than better. What helps is getting clear on the cycle that keeps OCD going, and then having structured tools to work through it with the client. This article goes through the main CBT techniques for OCD, with worksheet examples you can use in session.
Understanding the OCD Cycle
OCD is maintained by a cycle, and going through that cycle with a client is usually the first thing I do. Most people arrive knowing something is wrong, but without a clear picture of how the pieces connect, and seeing it laid out gives them somewhere to start.
Obsessive-compulsive disorder is an anxiety condition where intrusive thoughts, images, or urges (obsessions) drive repetitive behaviours or mental acts (compulsions) meant to bring the distress down. The cycle runs through four parts, each one leading into the next:
- Obsession: an intrusive thought, image, or urge, like "what if I left the oven on".
- Anxiety: the obsession brings on anxiety, and a strong pull to do something about it.
- Compulsion: the client does something to bring the anxiety down, like going back to check the oven.
- Relief: checking brings short-term relief, and that relief is what makes the obsession and the compulsion more likely next time.
The relief at the end is what keeps the whole thing turning. The compulsion feels like it worked, so the next time the obsession comes back, the client does it again. When I work with someone, I find it helps to get this on paper before we change anything, because most clients have never seen the cycle they're caught in laid out plainly. A simple symptom check-in, filled in over a week, is usually enough to do that.
Assessing OCD: Triggers, Symptoms and Severity
Before any exposure work, it helps to get a clear picture of what the client is actually dealing with, and two structured tools cover most of it.
The first is a symptom check-in. OCD is easy to under-report, and for a couple of understandable reasons. Clients often feel ashamed of the content of their obsessions, and mental compulsions, like counting, praying, or repeating words silently, are invisible unless you ask about them directly. A checklist that separates the obsessions from the compulsions, and notes how much time they take up each day, gives you a clearer baseline than open questions on their own.
The second is a trigger map. When a client writes down what sets an urge off, that vague sense of being triggered all the time turns into a specific list the two of you can work from:
- What they see, hear, smell, or touch that sets off an urge
- The situations that reliably bring it on
- The things other people do that trigger them
This is also where the structured questioning in our post on cognitive behavioural therapy questions to ask clients helps, because the same open, curious style lets you ask about the obsessions without reinforcing them.
Thought Records for OCD: the ABC and ABCDE Models
Thought records are a CBT staple, and they work well for OCD with one adjustment. The aim is to help the client look at the thinking that fuels the anxiety, rather than to argue the obsession down, because arguing with an obsession usually just feeds it.
The ABC model is the place to start:
- A, the activating event: the situation, image, or memory that triggers the obsession, like leaving the house to run an errand.
- B, the beliefs and thoughts: the obsessive thought itself, for example "what if I forgot to lock the door".
- C, the consequences: the feelings, sensations, and behaviours that follow, like panic rated at 90, a pounding heart, and going back to check the door.
Once a client can track an ABC, the ABCDE version adds two more steps. D is for disputing the thought, weighing up the evidence for and against it, and E is for evaluating, re-rating the emotion once a more balanced thought is in place. In the worked ABCDE example in our CBT for OCD Worksheets, a client's panic drops from 90 to 25 after disputation, and that kind of visible shift is usually what convinces them it's worth doing again at home.
There's one thing worth keeping an eye on with OCD, though. Thought challenging can become a compulsion of its own when it turns into reassurance. If a client uses it to prove to themselves that the feared thing won't happen, they get the same brief relief a compulsion gives, and the cycle carries on. It works better to help them hold the thought a little more loosely and let the uncertainty be, which is what exposure builds.
Exposure and Response Prevention (ERP) for OCD
In exposure and response prevention, the client faces a situation that sets off the obsession and holds off on the compulsion that would normally follow. Over a few minutes the anxiety climbs, levels out, and comes down on its own, and the client learns that the feared outcome doesn't arrive, and that the compulsion was never keeping them safe. It runs in two stages.
The first is building an exposure hierarchy. The client lists the situations that cause distress, rates each one from 0 to 100 for how much anxiety it would bring, and puts them in order from easiest to hardest. Someone with contamination fears might rate going to the hospital without a mask at 80, a public restroom at 70, and handling money at 30. Once it's on a single scale, the client can start at the bottom instead of facing all of it at once.
The second is the response prevention itself. At each step, the client stays in the situation without doing the compulsion, using paced breathing and balanced thinking to get through the spike of anxiety. The delay before the compulsion starts short and gets longer with practice, and the client only moves up a step once the one they're on feels manageable. A few common compulsions show what response prevention looks like in practice:
| Compulsion | What it looks like | Response prevention |
|---|---|---|
| Checking | Going back to check the oven, door, or locks again and again | Check once, leave, and delay going back |
| Washing or cleaning | Repeated handwashing or sanitiser use | Touch the surface and hold off on washing for a set time |
| Mental reviewing | Replaying an event to be sure nothing went wrong | Notice the urge, leave the uncertainty, and don't review |
| Reassurance seeking | Asking others "are you sure it's fine?" | Decline to seek or give the reassurance |
In my experience the hierarchy works best when the client helps build it, since a list someone else has drawn up is much harder to commit to. And when a step feels too big to take on directly, graded exposure breaks it down further, by changing who's there, what the client does, and when, where, and for how long.
Behavioural Experiments to Test OCD Predictions
OCD runs on negative predictions, the expectation that something bad is going to happen and that the client won't be able to cope if it does. Behavioural experiments test those predictions directly, in much the same way you'd set up a small experiment to see what actually happens. They're simple enough to teach in a single session:
- Name the prediction. What exactly does the client expect to happen, and how strongly do they believe it from 0 to 100?
- Set an alternative. What's a more balanced prediction, and how strongly do they believe that one?
- Plan the test. Decide what they'll do, when, where, and with whom, starting small.
- Run it and write down what actually happened, sticking to the facts.
- Review the evidence and re-rate how strongly they believe the original prediction.
What the client takes from them goes beyond proving any one worry wrong, useful as that is. Tolerating uncertainty is genuinely hard for most people with OCD, and each experiment gives them a bit of first-hand evidence that they can do it. They're also a gentler place to start than full exposure for a client who isn't quite ready for the hierarchy.
Managing Urges and Physical Symptoms
Response prevention is hard in the moment, because the client is holding off on the one thing that usually brings relief. So it helps to give them some practical ways to manage the physical side of anxiety while they wait it out.
Urge surfing is one I come back to often. Rather than acting on an urge or fighting it, the client learns to notice it and let it run its course, knowing it will rise, peak, and pass on its own. It treats the urge as a feeling to notice rather than an instruction to follow, and with a bit of practice it loses some of its force. A few body-based tools help the client stay in the situation long enough for the anxiety to settle:
- Paced breathing, such as a 4-2-6 rhythm (in for four, hold for two, out for six), to settle the stress response.
- Progressive muscle relaxation to release the tension that builds up with anxiety.
- Self-soothing through the five senses, for the moments between sessions when an urge is strong.
None of these are meant to switch the anxiety off, which would only be another way of avoiding it. They're there to give the client enough steadiness to stay in the situation while the urge passes.
Supporting Change Between Sessions
OCD treatment depends a lot on what happens between sessions, since that's where the exposures actually get practised, so it's worth putting a few structures in place to support it.
Clear, broken-down goals are a good starting point. A SMART goal split into small weekly tasks keeps things manageable, and a simple weekly tracker gives the client something to fill in and bring back, and shows you what they managed and what they didn't.
It also helps to be honest with clients that change isn't linear. Walking them through the stages of change, including the real possibility of relapse, lets a slip feel like a stage to work through rather than a sign that everything has fallen apart. And when a client gets stuck, a simple problem-solving model like SOLVE, which moves through specifying the problem, listing the options, weighing the pros and cons, choosing and acting, then evaluating, gives them a way forward that doesn't rely on you being in the room. Take-home worksheets matter a great deal in OCD, because the compulsions happen in exactly the everyday moments you're not there for.
CBT for OCD works because it targets the cycle that keeps the disorder going, rather than the content of any one fear. The psychoeducation, the thought records, and the exposure all pull in the same direction, towards helping the client tolerate not knowing and let go of the compulsions they've leaned on to feel safe. The clients who make real progress are usually the ones with something concrete to work from between sessions, not just the insight from the hour with you.
Veronica West is a registered psychologist (BPsychSc(Hons), MPH, MPsych) and the founder of My Thriving Mind, a digital resource library for psychologists, counsellors, and allied mental health professionals. The range covers individual worksheet sets and presentation-specific bundles like the CBT for OCD Worksheets and the Exposure Therapy Worksheets, the CBT worksheets collection for cognitive tools beyond OCD, and the Whole Shop Bundle for clinicians who want the full library of 1,000+ therapy resources in one purchase. If you'd prefer to try before you buy, our free resource library is the simplest place to start.
Browse the CBT for OCD Worksheets here.