Please help me out here, I have this very very bad habit...?

Just STOP! It's not like smoking [which I'll never understand anyway] because it's not putting addicting chemicals into your body! Use your willpower, and get it over with! You could definitely start *right now* if you're picking your lips right this second then freakin stop! Everything you said above should be reason enough. I don't know if it would work but you could try keeping your mouth busy like chewing or sucking on ice/lollipops/gum so your lips won't just be there waiting to be picked [ew] You could also keep your fingers busy doing other stuff, just take your mind off it as soon as the thought pops into your head.. You gotta be stronger then that !