I'm a bit surprised so few of you know anything about OCD. I had very severe OCD and HOCD as a child. I thought it was lately en vogue to feature it on reality shows and crap like that. Hmmm. I guess word hasn't gotten out as much as I thought.
Anyway, it sucks, and the only way I could cure mine was to make a conscious decision to become self-destructive and to let my friends and family die, to not give a shit about my sexuality, and, well, really, that last part was the key. Just stop giving a shit about anything. Shut your emotions off. Embrace death. Then your OCD loses all of its power over you, because it has nothing to threaten you with if you don't do x, y, and z. That's how I dealt with it.