I Need Help!

Hello. im 21 and have been suffering with dermotillomania for about 6 or 7 years now.  I pick EVERYWHERE.  My whole body is scarred and it looks like ive got a skin desease. I will sit for hours picking my arms, legs, face, back, chest...well you get the idea. I consider my self to have a servere case of chronic skin picking and im running out of body parts to ruin. I have tried aversion therapy by using a rubber band on the wrist but no joy yet. The overwhelming urge to pick my skin allways takes over in the end. What i find most hard is the fact that the temptation is your own skin, so for instance if you are a smoker(which i was and successfully gave up a few months ago) you can remove the temptaion from you, but you obvioulsy cannot  get rid of your skin so its a hell of a lot of will power you need! I am considering hyponotherapy and am just wondering if anyone could say its worked.