Zero or five
I have OCD. At times it can be really annoying. I have so many quirks, therefore a lot of people think I'm weird (they don't know about the OCD). When I'm at work (I work in an office), I always have to make sure the number of orders I work either ends in a zero or a 5. It's just this thing I have. If it doesn't end in a 0 or 5, I go nuts! I also MUST make my quota every day... not because my boss says so, but because I feel I HAVE to!