Good for you.
I could get a whole battleship crew drunk with all the booze I have poured out over the years while saying never again.
It takes a long time for some folks to realize that the booze just isn't for them. I know it did me.
I remember when I was 21 years old, driving to the liquor store, and telling myself to turn around, I didn't need to drink alone again tonight.
That was 27 years ago, and I am just now able to believe myself when I say I am done with the stuff. Sadly, I have let it destroy my health and almost kill me. But that was my choice. It wasn't like I didn't know it was going to kill me eventually. We all know that. All it takes to quit is "caring" that you live a long healthy life.
It sounds like you do care.