So, I'm going to admit something embarrassing here.
I bite my nails.
I know, embarrassing, right?
The other day, I was reading about compulsions, and I learned that nail biting is actually classified as a diagnosis in the DSM-IV. It's an impulse control disorder along the obsessive compulsive spectrum. Obsessive compulsive spectrum? Puh-lease. I doubt that.
It's totally normal that I only use white plastic hangers in my closet, and that I always double check my car door to make sure that it really is locked, and that I sometimes run back into the house to make sure the oven is off and my straightener is unplugged.