First, a big congratulations on your four years of being alcohol free. From a random stranger on the internet, I applaud your success, and wish you the best. It always puts a smile on my face to hear these types of things.

I've never gone through any programs but have had family who have. On the religious stuff - my general interpretation has always been that it's less a confession of faith in a higher power, but more a surrender of control, or in some senses a selection of values above yourself that you adhere to. From a bird's eye view, it kind of sounds like you already are doing that, with philosophy/Eastern thought/stoicism.