This is a hard question to answer because the concept is your "own" concept of a higher power. In my experience in OA, some call their higher power God, some Goddess, some call their higher power the "power the group comradery provides". Some call it the power of the universe. So basically, just in my opinon, you have to identify the power yourself. My counselor told me to return to OA for the power of the community support. So maybe you could accept that. Also, you should be careful not to let others criticize your opinion. Choose you own path.
Anyway, good luck, hope to see you stick around.
About me: I am 62 years young. I started my weight loss journey in January 2011 at my top weight of 350. I made a decision at that time not to diet, but to make a lifestyle change.
And today, I am renewing the journey.