Dear KP,
It may be true that our problem is not the lusting and masturbation, but living real life without them. Real life without the comfort of our sex-with-self and fantasizing, is just unbearable....or, as you put it, getting close to unbearable!
So.
The 12 steps suggest a path of gaining comfort with real life - or as the addicts put it, "life on Life's terms" (and they mean on G-d's terms, really). It is steps 4-7, then steps 8-10. They are about gaining acceptance of other peoples' limitations, of G-d's power and our lack of knowledge, of our sometimes very self-defeating ways of dealing with events, people, and G-d's Will, and learning to allow Hashem in by getting our self-will out of His way.
As the Kotzker used to say, "Hashem only comes where people let Him in!"
That's all the 12 steps are, nothing else.