(The following is a post from one of our group members.)
My Step 1 experience brought me to the bedrock belief that I am powerless over lust, that my life had become unmanageable. That powerlessness resulted in a experiential understanding that I had no control anymore over lust. Lust controlled me, and there was nothing I could do in my effort to change that. Lust was always more powerful than me, and I had no hope in battling it.
I needed a power more powerful than lust to take care of my lust for me. Fortunately there is the SA program of the 12 Steps that showed me that if I came to trust a Power greater than myself (and greater than lust), I would be given a gift of sobriety every time I turned my lust over to that Power. I could be restored to sanity. I did not need to surrender to lust anymore. I could be rid of it.
Since I didn't really have another realistic choice (because I am powerless), Step 3 was how that growing trust in God would work its way out. I would simple give up trying to maintain control over lust and over myself, and instead let God have that lust and my will and life. And when I've given my will and life over to God, then turning any temptations over to Him is really quite natural.
As my sponsor said, Step 3 is a decision to work the rest of the Steps. And that was a journey that continues to bring me into right relationship with God and others.
After seven years of sobriety, do I now have control or some power over lust? No. But God still does, so I don't have to. And that's what keeps me sober.