In Chapter One, why does Saul agree to tell his story?

From the text:

These people here want me to tell my story. They say I can’t understand where I’m going if I don’t understand where I’ve been. The answers are within me, according to them. By telling our stories, hardcore drunks like me can set ourselves free from the bottle and the life that took us there. I don’t give a shit about any of that. But if it means getting out of this place quicker, then telling my story is what I will do.