Welcome my friend. Sounds like you're ready for a change. Its a vicious cycle. The good news is that it can end.
I have recovered and am sober 4+ years now. I used to drink not to feel drunk but to feel "right." Booze seemed to make my skin fit. Without it I was restless, irritable, discontent, anxious, bored, depressed etc. Alcohol was a great fix for that for a long time. Unfortunately it became less and less effective and started creating more and more problems. I went through treatment and jumped into AA with both feet. I am relieved of any desire to drink and my life has improved in so many ways.
Youll find a lot of support here. Many people have gotten sober many ways. Your best bet in my opinion would be to start with your doctor. Alcohol withdrawal can be dangerous and potentially lethal. A safe detox is essential.
Best wishes to you. You can do this.