I have been sober now for 5 months and I haven't had to alter my worldview or compromise my principles in any way. I'm a skeptic and an atheist so the higher power concept just doesn't gel with me. You don't need it unless you need it, it's that simple.
Just stay committed to sobriety and do what ever it takes to remain that way. Don't let anyone tell you what you need- certainly take in the advice of others and try to apply however you can- but anyone who tells you that you need to believe one thing over another to stay sober is off base. You will find plenty of people in this world have been able to maintain long term sobriety without religion, or even without any specific program. It's just about committing to sobriety, which can be accomplished in an endless number of ways, and you can always fit it into your life and your vision of reality, whatever that may be.