Have you read this excellent thread with lots of great (CBT) tools?
http://www.soberrecovery.com/forums/...nal-noise.html
I've used most of these techniques successfully. You can never have too many tools in the box!
I am also one who opts for no more pharmaceuticals. I've tried so many different ones for anxiety and depression and obsessions. None of them work as well as internal tools to stop the thoughts.
Good luck. Keep searching, you'll figure it out. Be gentle with yourself - life is a puzzle