Hi 59, as you have seen from reading mourned the board this community is full of people just like you who quit for good and made it. They all say it was not easy but was completely worth it.
Visiting your doctor, getting to AA and making a firm commitment for Day 1 all seem like excellent first steps. In time, the rest will come and you will make it if you commit to it. You have nothing to lose and your life to gain. Good luck and keep posting, many people here want to help you.