I just finished 84 days at St. Joseph's Recovery Center in Parkersburg, WV.. I have over 100 days clean and sober. People are always saying you can't do it with out God but I have done it. I find more strength and courage within myself. I have endured having my right leg amputated, twice, once through the knee and a second to amputate my knee. I received my third prosthetic leg September 19, 2019 and I'm already walking with it. So, people you can do the twelve steps of AA/NA/HA or whatever "A" you choose by simply exchanging the word "God" with "My Higher Power".
It's wonderful that you found the inner strength to fight and win! God, in my opinion, is the hope that many cling to, and they need it. But only really strong people can rely not on God but themselves and independently decide to go to their goal. It's great that you are the very person who does not need mythical incentives and can assess the situation independently. As for the sobriety support groups, there are different people, and there will be a different approaches based on this.