Someone told me about a psychologist who had great success with ocd by eliminating mental compulsions, as by his theory without compulsions there is no ocd. He had a lot of great points about rumination and mental compulsions but I forgot his name, can someone help me?

I'm usually quite precise in my wording, my post said eliminating mental compulsions not OCD and while it is something that requires probably lifetime maintenance with a risk of relapse it can be minimized to the point of almost no interference in your life. But I hope you don't expect me to clarify every word I write down just so you can be happy with a 40 sentence post.