I used to lean towards OCD when I was younger but it's faded with time and confidence. I used to wash my hands excessively. In multiples of four( ie using soap and rinsing, then again), I couldn't stop on an odd number. Sometimes I'd just wash my hands over and over and over and had to work really hard to force myself to stop. Then I couldn't touch anything for a while. If I touched the floor, I had to wash my hands, and doorhandles, pets etc. If I got nervous, I would wash my hands as a kind of reassurance mechanism.
Now it's not so bad, I can usually keep it under control! I used to have lots of other little obsessions (lights turned off and on, shoes being lined up in my bedroom, curtains pulled the correct way) but I squashed them all, only this one has persisted.
"I have to turn the light off and on 8 times when i walk into a room otherwise my family will die," guy from the cafeteria in the museum in a Friends episode. haha. :D