Intrusive Thoughts: When Trying to Let Go Becomes Another Struggle
If you experience intrusive thoughts, rumination or OCD, you may have come across advice to disengage from your thoughts rather than getting caught up in them.
The idea makes sense: instead of analysing every thought, trying to work out what it means or searching for certainty, you practise letting it be there without giving it more attention.
But this advice can be surprisingly difficult to put into practice. You might find yourself monitoring whether you are disengaging properly, checking whether the thought has gone away, or worrying that you are secretly suppressing it. Before long, trying not to get caught up in your thoughts has become another thing to think about.
Part of the difficulty is that suppression and disengagement can look similar from the outside, while involving quite different things psychologically.
Understanding the difference can help you respond to intrusive thoughts without turning the effort to manage them into another struggle.
When an intrusive thought starts to matter
Intrusive thoughts are a common human experience. They can take the form of unwanted images, doubts, memories or impulses, sometimes appearing for no obvious reason. What distinguishes OCD is not simply having these experiences, but the distress, significance and compulsive responses that can become attached to them.
A thought might be disturbing because of its content, or because of what you fear it says about you. You might worry that having a particular thought means you secretly want something, that it reveals something about your character, or that failing to resolve a doubt could lead to a terrible outcome.
When this happens, the thought can begin to feel like a problem that needs solving. You might replay a conversation to check what you really meant, examine your feelings to establish whether they are genuine, or search online for an explanation that will finally put your mind at rest.
You might have even realised that the thought is not as important as you first thought, but, frustratingly, it still keeps coming back no matter how much you try to talk it down.
The trouble is that these efforts can give the thought even more importance. The more urgently you try to establish what it means or see it as a problem, the more attention you devote to it. And the more attention it receives, the harder it can become to leave alone.
This is one way a cycle of rumination can develop. You experience an unwanted thought, feel compelled to work out what it means, gain some temporary relief from analysing it, and then find yourself returning to the same question when the doubt reappears.
If you recognise this pattern, you can read more about my approach to intrusive thoughts and OCD and how therapy can help you understand the responses that keep these cycles going.
Why trying not to think about it can backfire
One understandable response to an unwanted thought is to try to push it away. You might tell yourself not to think about it, distract yourself as quickly as possible, or try to replace it with something more reassuring.
Research on thought suppression suggests that deliberately trying to keep a thought out of your mind can sometimes make it more accessible or persistent, although the effects vary. The difficulty is that suppression can turn the mere presence of a thought into something you feel you must control, creating another internal struggle.
Try not to think about a pink elephant for the next few seconds. You may find that the very instruction brings the image to mind. In trying to ensure that you are not thinking about it, you have to keep checking whether it has appeared.
Something similar can happen with intrusive thoughts. If your main aim is to make sure a thought does not appear, you may become increasingly alert to any sign that it is there. You might scan your mind for it, check whether you are feeling anxious, or become preoccupied with whether you have managed to put it out of your mind.
This can create a frustrating paradox: the more effort you put into ensuring that a thought is absent, the more attention you may end up giving it.
Research by Najmi, Riemann and Wegner (2009) examined different ways of responding to unwanted intrusive thoughts in people with OCD. They found that thought suppression was associated with greater distress, while acceptance and focused distraction were more effective approaches. Interestingly, the harmful effects of suppression were reflected primarily in distress rather than in how frequently the thoughts occurred.
What you can and can't control
It is worth distinguishing between a thought appearing and what you do in response to it.
You have limited direct control over which thoughts enter your mind and when they appear. Trying to guarantee that a particular thought will never occur is likely to become an exhausting task. You have more scope, however, to influence how you respond once a thought is there.
This does not mean you can simply choose not to feel distressed, or that you should be able to stop yourself from ruminating whenever you want. These responses can become deeply ingrained, especially when they have developed as ways of managing anxiety or uncertainty.
Disengagement is not about forcing a thought out of your mind. It means recognising that a thought is present without automatically treating it as a question that needs answering, a feeling that needs resolving or a problem that needs fixing.
You might notice the urge to analyse what a thought means and choose not to follow that urge immediately. You might allow a doubt to remain unresolved while returning your attention to what you were doing. The thought may still be there, and you may still feel uncomfortable, but you are no longer making its resolution a prerequisite for carrying on.
The distinction is subtle but important. Suppression is an attempt to control whether a thought is present; disengagement is a change in how you respond to it.
When disengagement turns into avoidance
Disengagement can itself become another form of control if you use it primarily to ensure that you never have to experience a particular thought or feeling. You might tell yourself to let a thought pass, but become frustrated or alarmed whenever it stays. You might repeatedly use a mindfulness technique until you feel calm, treating that feeling of calm as proof that you have responded correctly.
In these situations, the technique may have become another way of trying to neutralise distress rather than allowing it to be there.
The distinction isn't simply whether you do something that reduces your exposure to a thought. It's whether your behaviour is becoming organised around the need to prevent, escape or neutralise the distress associated with it.
You might reasonably choose to leave a noisy room, for example, without that being avoidance in a clinical sense. But if you increasingly organise your life around preventing a particular thought or feeling from arising, the effort to protect yourself from the discomfort can begin to restrict what you do.
Disengagement, by contrast, means allowing the thought to be present without automatically getting drawn into analysing or resolving it. You don't have to seek out discomfort, but you can practise making room for it when it arises, rather than treating its presence as something that must be dealt with before you can carry on.
The hidden agenda of acceptance
Acceptance is often misunderstood as a technique for making uncomfortable thoughts and feelings disappear. If you accept a thought, the reasoning goes, you should eventually feel less anxious about it. When the anxiety remains, it can seem as though you are doing something wrong.
But acceptance isn't a bargain in which you tolerate discomfort in exchange for relief. It means allowing your experience to be what it is, without making the disappearance of discomfort the condition to achieve before you can continue living your life.
This can be particularly difficult when you are dealing with OCD or persistent rumination. You may be so accustomed to resolving doubts that leaving one unanswered feels irresponsible, or so used to monitoring your internal experience that allowing a thought to remain feels like a risk.
The temptation is to turn acceptance into another rule: I must accept this thought properly so that it stops bothering me. But this leaves the underlying struggle intact. You are still trying to control your internal experience, just through a different method.
A more useful question might be whether you can allow the thought to be present without needing to establish what it means or how you feel about it. You don't have to agree with the thought, like it, or prove to yourself that it is harmless. Nor do you need to feel completely accepting of it.
Thoughts may become less distressing or less consuming over time, but this isn't guaranteed, and it doesn't need to be the measure of whether you're responding differently. You can make a meaningful change in how you respond to a thought even when the thought itself continues to appear.
A study by Marcks and Woods (2005) found that an acceptance-based approach reduced the discomfort associated with personally relevant intrusive thoughts, but did not reduce how often the thoughts occurred. This illustrates an important distinction: responding differently to a thought can make a difference to how you experience it, even when the thought itself continues to appear.
Practising a different response
There are practical ways to begin changing your relationship with intrusive thoughts. Approaches such as Acceptance and Commitment Therapy (ACT) use mindfulness and other exercises to help you notice thoughts without becoming completely absorbed in them.
One example is the leaves on a stream exercise. You imagine sitting beside a stream, with each thought placed on a leaf that floats past. When you notice a thought, you acknowledge it and imagine placing it on a leaf, allowing it to move along the water.
The purpose isn't to make the thought disappear or to force yourself to feel detached from it. If you find that you are watching the leaf anxiously to see whether the thought has gone, you can notice that too. You don't have to make the exercise work in a particular way.
Another ACT technique, often called dropping anchor, involves bringing your attention back to the present when difficult thoughts and feelings pull you into rumination. You might notice the sensations of your feet on the floor, the movement of your breathing, or the sounds around you. From there, you can consider what you want to do next, even if the thought or anxiety is still present.
These exercises are options rather than steps you need to complete whenever a thought appears. If you find yourself repeating them until you feel calm or certain that you've responded correctly, it may be worth looking at whether the exercise has become another way of trying to neutralise the discomfort.
You may also find that the most useful response is much simpler: noticing that you have become caught up in a familiar line of thinking, recognising the urge to continue, and returning to what you were doing. There is no need to achieve a particular mental state before you carry on.
Where therapy fits
When you are caught up in intrusive thoughts or OCD, it is tempting to look for a rule that tells you exactly what to do each time a thought appears. Should you ignore it, accept it, challenge it, distract yourself or let it pass? No single response fits every situation. Sometimes reflection is useful, and sometimes there is a practical problem that needs attention. The difficulty comes when thinking becomes repetitive, driven by the need for certainty and increasingly hard to leave alone.
When rumination functions as a compulsion, therapy can help you recognise and change the responses that keep the cycle going, including mental rituals that are less obvious than physical checking or reassurance seeking. Exposure and Response Prevention (ERP) is an evidence-based approach to treating OCD, while ACT can help you practise a different relationship with difficult thoughts and feelings.
There may also be value in exploring the experiences and relationships that have shaped how you respond to uncertainty or distress, provided that exploration is helping you understand yourself rather than becoming another attempt to find a definitive answer.
You don't have to make the thought disappear before you can get on with your life.
If intrusive thoughts or rumination are taking up a lot of your time and energy, you can read more about my approach to OCD and intrusive thoughts or contact me to discuss whether therapy might be helpful.
