First off, believing in a higher power isn't "required." For me, the group itself is my higher power. I don't know how AA works, but it does...Just sitting around the tables makes me realize I'm not alone with my alcoholism. Once you realize you're not alone with the problem your embarrassment will cease. There's no harm in trying AA to see if it works for you.

As for telling your friends, there's no need to feel embarrassed about turning down a drink. Telling them that you don't drink is a sufficient answer...At least that's been my experience. Good luck in your journey. You're not alone.