I agree that all of us have ways of "sabotaging". The fact that you are aware of this and aware that you want to work on it puts you MILES ahead of so many people.
I would be really surprised if your new doctor isn't very appreciative of how forthcoming you are. Being honest & upfront about this and your desire to work on it makes you a really good candidate for working on change and talking openly about it. I predict your doc will be very impressed with your insight and honesty. I am..........