Congratulations on your third night.
You're right -- everyone's spirituality is different. That's why AA was built around that very concept. The God part is whatever you need it to be. Whatever "way you are". And even if it's only "maybe"... the maybe is where the success begins for a lot of people. But you have to do what works for you.
I myself did try (starting when I was about the same age and in the same boat, except I didn't even believe there was/would be progression) to tell myself I could power/will/etc myself into not drinking. Over and over. It took me until I was 36 and the previous 10 years had evaporated in a heartbeat before I finally had to call uncle. And I threw every resource my brain had at the problem, believe me.
In the end, I had to go outside myself -- ultimately; spiritually -- to finally escape what by the end was an epic living nightmare, and to finally feel OK for maybe the first time in my life.
Glad you want it.