Congratulations on your sobriety and thank you for sharing what worked for you and what you believe is key.
I have been working my sobriety/recovery for a few years, I share some of what works for me here …
Respectfully, we all don’t ‘have to’ have a HP. It works for you and many others and that is wonderful. And it isn’t the same for everyone. I don’t have a higher power and I am good with that. 
Thank you again for sharing your experience and what helps you!! I know your share will reach and help many people. 