I have a terrible habit of chewing on my fingernails. I think it has to do with stress and anxiety. When I get nervous about something, or am apprehensive about something, or thinking about something that I can't control; I just can't resist the urge to chew and pick on my fingers. I will rip the fingernails off down; often times past the quick. I will pick on the hangnails, and the little thing-ies of skin until they bleed. My fingers will be raw and painful for days. Then just when they grow out, I start the process all over again.
I hate this habit. I know how disgusting it is. I know how dirty nails are, how many germs are there. I hate how my fingers look. But I just can't stop.