How do you cure ocd?

I havnt been officially diagnosed but i KNOW i have it. i do these odd routines every day and i have like these spaz moments where if i dont do a certain thiing with my hands i feel uncomfortable, fidgity, and i flip out. Plus i heard its hereditary and my dad has it. what can i do stop doing all the crazy little things i do. they're annoying, embaracing, and they intervene with my day... help!