Seeing that Ocd is very relentless I have stumbled across a method that helps me move on to doing other things.
Ocd is very petty and doesnt like being ignored.
But instead of completely ignoring it (in which case its strength seems to multiply) what I hope to do is as follows :-
Since Ocd's trick is to get me to try to enter into a power show with it by forcefully resisting it for like say 5 minutes I have devised a way that seems to work.
What I'll do henceforth is to actually do its bidding (If i'm alone) as this seems to take only about 10 seconds whilst forcefully resisting doing its command at times takes 5 minutes and seems to magnify its power a thousand fold.
So from now on I'll do what it says (within reason) and then move on instead of resisting for a longer period and still end up doing its bidding and empowering the demon.
Another tool that might help in achieving the above goal is to always have many tasks to look forward to e.g. tasks that are somewhat compelling, challenging, rewarding and potentially greater than your self.
Then you'll just do the Ocd action for maybe a few seconds and then immediately move straight into one of your tasks.
I hope this helps someone.