I would say losing my temper ... But I just lost it so I don't know then .
Smoking cigarettes.
I used to drink habitually. Booze, that is. I haven't done that since the night I fell off a train. >:-/
Thumb sucking! Course I did that a long time ago!
I was a compulsive nail biter :O but I haven't done that in ages
I use to love partying and going to different bars . Now u wont catch me in a bar
Nail biting. God, I used to do that so much when I was younger, but somehow I stopped and managed to grow out of it.
Biting my nails.
Not being able to close my eye's.