By that I mean, what is that one stupid little thing that you find yourself doing all the time, but that you hate doing? I just caught myself for the zillionth time mindlessly picking at my lower lip until it bled. I pick at it, and then there are rough edges, which bug me, so I pick at it... ARGH! I've been doing it since I was a kid, because I picked it up from my mom. I've tried cutting my nails all the way down so that I can't do it, but then I just worry at my lip with my teeth. I cannot seem to stop myself from doing it, no matter what.

What's yours? Do you chew your hair? Bite your nails? Jiggle your foot? Tell me all about it!