When you have obsessive-compulsive disorder (OCD), it can feel like your own mind is at war with itself. Instead of having productive and positive thoughts, you rehash the same worries and fears over and over again until they become unbearable. Did you really remember to lock the front door? What if you were to hit someone while driving your car? You may find yourself engaging in exhaustive rituals to keep these thoughts at bay. But soon, the doubts...