What works for me in detaching from my AS is to NOT think of it in the long term. Just for today I am going to keep my hands off the addict. Just for today I am not going to intervene or interfere with the choices he makes..good or bad. Just for today is all I can handle sometimes. It gets easier the more you practice and the more you become involved in your own existence rather than living the Chaos created by the addict.
I still get the knotted stomach feeling at times, but when I do I think about all the things I've learned here and in Naranon and reinforce to myself that my life is not my AS's life, I have chosen a different path and if he wants to turn his own life path around I will still be moving on mine and he can catch up if he so pleases.