I recently published a book called "Waging War Against OCD - A Christian Approach to Victory." You can see more details at WagingWarAgainstOCD.com - I think some of it would be of help to you.
Here is a snippet - it's a quote from Hannah Whitall Smith. She is speaking of spritual warfare, but it applies to OCD as well....(she lived like over 100 years ago, which is why the wording is so old school.)
"It seems hardly worthwhile to say that temptation is not sin, and yet much distress arises from not understanding this fact. The very suggestion of wrong seems to bring pollution with it; and the poor tempted soul begins to feel as if it must be very bad indeed, and very far off from God, to have had such thoughts and suggestions. It is as though a burglar should break into a man’s house to steal, and, when the master of the house begins to resist him and to drive him out, should turn round and accuse the owner of being himself the thief. It is the enemy’s grand ruse for entrapping us. He comes and whispers suggestions of evil to us, – doubts, blasphemies, jealousies, envyings, and pride, and then turns round and says, “Oh, how wicked you must be to think of such things! It is very plain that you are not trusting the Lord; for if you had been, it would have been impossible for these things to have entered your heart.” This reasoning sounds so very plausible that we often accept it as true, and so come under condemnation, and are filled with discouragement."
I think one of the best things top do is to learn about God's grace, and remind youself of it everyday. OCD tries to make us think of God in differently than He is (harsh, demanding, slow to forgive, wanting to punish us at every turn), when He is actually the opposite. He loves us as children, is slow to anger, full of mercy and grace towards us. I hope this helps!