I've noticed that I do some behavior repeatedly from excessive anxiety. For example, I would wash my hands about 100 times a day. If I touch anything, I must wash my hands. I also keep checking things. For example, before I go out I would check if I have the keys, and before I close the door, I would check the keys again. Also, when I fill a form, especially if it's important, I keep going over it again and again until I feel tired and frustrated. Are these behaviors caused by OCD or anxiety alone?