People with OCD appear to be in contradiction with themselves. On the one hand, they feel compelled to engage in compulsions. It’s extremely difficult to resist them and they’re not even sure they want to. Irrational thoughts won’t leave them alone, and giving in to compulsions provides them with temporary relief. On the other hand, they lose the ability to focus on the other domains of their life, which makes them neglect what they hold dear, and they suffer guilt because of it. The question is, what makes the OCD side win over the more genuine side?
A possible answer is that there is a false alarm in the brain of people with OCD. The alarm may go off at a lower threshold than for OCD-free people. Neurosciences and brain imaging are currently studying that line of research. Personally, I doubt that hypothesis because with CBT alone I was able to overcome OCD.
Another possible answer is that the OCD side wins when there is a lack of purposeful intention. It doesn’t mean that with willpower alone (or for that matter reasoning alone) OCD can be overcome. It’s rather a matter of deciding when to let the passing of time appease one’s mind and when to reach a conclusion in spite of the difficulties. Sometimes in a world full of uncertainties some tough choices have to be made. For instance, maybe if I seek more certainties, if I keep pondering, if I eliminate all risks or all disorder, etc., I may find the peace of mind I’m looking for, maybe not. So, at one point in time I need to stop seeking more certainties, tormenting myself about an issue, checking, etc., so the other domains of my life won’t be neglected and I’ll be able to live a balanced life. It’s not easy because there is no absolute guarantee it’s the right decision, but, if I don’t make it, my self-esteem will be degraded and my only hope to return to normal will be to make my obsessional search succeed. So, I won’t be able to stop it and at the same time I won’t be able to make it succeed because if good reasons are not enough now for me to decide, nothing will be enough. Once the difficult decision is made, it’s normal for discomfort to linger because it's not a perfect decision, but if it’s the best decision possible given the information available at the time, the lingering of discomfort will end at one point.
I’ll be glad to get feedback on that explanation. In my case, that way to look at OCD helped me navigate through it and not be a slave of it anymore. I’m comparing my situation to that of a person with an alcohol use disorder. The longer I’m sober/OCD-free, the more motivated I’m to stay on the same path. As long as I don’t start to drink /to obsess senselessly, I don’t feel the need to try to end all my troubles by any means, including drinking/obsessing some more.