Hi, Seeker.
Congrats on 15 months of sobriety!
I believe there are many people on this site who stay sober without AA, myself included (2.5 years).
IMO, there is never only one way to do something. And no one is "doomed".
Meditation and exercising sound like pretty good way to contribute to your sobriety.
Don't feel paranoid.
Keep posting.
Best wishes to you.