People prefer to believe that, with enough fact gathering, insight, and the heart-to-heart sharing of honest, heretofore suppressed, and probably embarrassing emotion, any problem can be sourced and solved. In fact, knowing why you've got a bad habit usually gives you no ability to stop it, and the search for deeper knowledge sometimes serves as an excuse for waiting until it's easier to stop, which it never is. So getting to the root of your problem is often a waste of time.
Reminds me how Dr. Manual Smith called that type of therapy "intellectual m*sturbation" because it's fun for the therapist and the person, but doesn't necessarily yield any results. He claimed you can solve psychological issues without knowing the cause.