I've received enough of the messaging that I feel very paranoid about leaving the program, like I am doomed to fail.
A load of hooey. This was my observation too during my short experience with AA, I was told the same thing and on several occasions from multiple sources. The fact that the bb allows other recovery modes doesn't stop this stuff from being repeated.
You sound as though you own your sobriety, and have a good way of seeing your sober future as one full of opportunities that alcohol would steal from you. That is how I see mine too, and I will mark my four year anniversary in a few months.
If your meetings aren't helpful, then find other meetings, or stop going. Exercise and meditation are powerful and transformative activities, highly recommended. You are perfectly free to do as you please, and that includes staying sober for good. Onward!