I agree with all the posts above. I tend to engage in the attribution bias, which consists of attributing reasons for our behavior or beliefs which are different from the reasons and causes we attribute to other people. Some do this in a self-serving way, and others, like myself, in a self-deprecating way. I have the irrational tendency to attribute my successes to causes other than my own dispositions. I tend to think it was just luck what made me be successful at something.
OCD in part consists of engaging in some of these cognitive fallacies (often knowingly), besides parts of the brain not functioning correctly