OCD and anxiety are rooted in fear. Fear is THE primary weapon of the enemy of God. The bible talks about fear a lot. There is a verse that tells us to "cast your care on God." My sister said sometimes she will actually write her fears down on paper and then literally crumple the paper and throw them. Or you could burn them. It helps me to imagine just piling them on God, like when you hand a pile of schoolbooks to a friend. I know He can take care of them and I don't have to shoulder them... For things that come into my head that I don't want, I mentally visualize whatever the thing is as if it is on a picture on the table, and I slide it off of the table through a burning incinerator, with the ashes falling into a can next to the table. This practice is a cleaning routine, just like washing your dishes. If you find there still seems to be a stronghold, I also recommend the Don Dickerman book, Keep the Pigs Out about spiritual attachments (Christians can and do have spiritual attachments (not possession, but demons that torment) that gain access to do so when we "open doorway." He is an old country preacher, but he has helped many people in prison and in all walks of life cast out demons once they close the doorway they gained access through. I don't think he sells the resource called "Demon names and Functions" anymore, except to clergy, but I have an old copy. There are specific demons that specialize in fear. If I can find that book I will see if I can post some pics. His prayer to cast out demons is in the back. It is very thorough and methodical.