A little searching on the Internet says the treatment for the disorder is talk therapy. It's possible that could work.

talk therapy doesn't work see "House of Cards" by Robyn Dawes. Instead use CBT cognitive behavioral therapy.

The cognitive part is understanding that your rituals/behavior are irrational and the behavioral part is actually acting on that understanding against the subjective pull to do otherwise. Good advice on the latter can be found in the link below, with video:

http://www.ocduk.org/2/foursteps.htm