i saw that on obsessed too. it was a bit odd when she asked why is it so satisfying and he replied saying that it's because it takes you out of your life, you focus on that and time slips away. now that is true. i dont think of anything except my skin and time can get out of hand really fast, but i don't feel like i ever do it in that circumstance. i don't know.. i don't feel like "i'm sad" and my mind racing so i pick my skin to avoid that. maybe i just have never paid attention to why i do it. i know that its so much relief and satisfaction that i don't really get anywhere else, so maybe it's partially that too.