A lot of people on this board have quit without AA including dome with SR as a sole support. Dee74 who is one of the main mods on SR has double digit sobriety and never went to AA.
I started with AA but these days I use a mindfulness and Buddhist based approach to recovery.
The key is like Anna said to be committed and like Silentrun hinted at to be flexible and remain teachable.
You can do it
Check out the secular connections
Secular Connections - SoberRecovery : Alcoholism Drug Addiction Help and Information