I'm in CBT right now, with a therapist who works with people with health anxiety and OCD. He and I are working through the book OVERCOMING HEALTH ANXIETY, by Owens and Antony, at the moment, and it seems to be helping me. It's a lot of work, I'll warn you, and you must be prepared for getting somewhere, and then backsliding...getting somewhere, and then backsliding again...but it ultimately feels as though it'll be worth it. You must also be prepared (if you're going to use a book like the one I mentioned above, which is one of only two or three on the topic) to do a lot of digging into yourself and your past, and doing a lot of writing -- CBT asks that you keep a journal, a log of your thoughts and behaviors, etc. But I believe that if you're willing to put the work in, you'll get results. (See also my other thread about reassurance-seeking as an addiction, which is something that I'm currently working on this week with my therapist.) Good luck!