I've had obsessions my whole life, so with the help of therapy actually I can do more than I used to, but I'm acutely aware of how the obsessive nature impacts my ability to be creative. My creative outlet is composing music. As a child I wanted to be a composer, but I couldn't write more than a couple measures at a time before they would get stuck in my head and drive me mad. I now realize that without OCD I probably would have been naturally building big structures, perhaps a lot in my head. Now I can do more than I used to, but can't imagine music very well (my head is so full of racing obsessions) and I can't work with very large structures.