I remember an AA meeting I went to years ago before I decided it wasn't for me.
At the meeting was this well dressed, well spoken bloke, who was sharing. Then, I suddenly remembered him! When I was young, he was a real method drinker, used to fight invisible enemies in the road and hold up busses, mostly the bus I took to work and his shannanigans would make me late!
Since then he got sober, fought cancer, and was a very nice man.
Unfortunately his cancer caught up with him again and he died.
But I will never forget the difference in that man from drinking to not drinking