I wonder if it's possible, just like symptoms, sickness or pain, to detect habits. Finding out why a person does that and than work on it and get rid of it. 
For example some people bite their nails or pluck their hair, I bite the inner sides of my mouth. But no matter what I tried so far, nothing has ever worked to stop it because I do it unconciously.
Soooo, I'm ready to get enlightened ;-)