My sister has OCD and she is very compulsive about going up and down stairs and doing this little dance and touching the walls in a certain way. When she was a kid we just thought it was a some goofy kid thing, but learned later what it really was. She also has a hard time getting rid of anything that belongs to her kids or school pictures we send to her every year. She feels like its bad luck if she throws them away. She even kept the hair when she cut my 3 daughters hair. My parents tried to get her to get some counselling or medication, but she refused and to this day, deals with her obsessions. I think she even has to eat and chew her food in a certain way. I feel really bad for her.