Hi and welcome stampy
The biggest waves can come from the smallest ripples, you know?
See your Dr, explain what you want to do and see what they suggest - make sure it's safe for you to quit.
Then...don't buy booze one night.
The first few nights are not gonna be great, but you can get through them. I did, and hundreds of other folks did too.
but see your Dr first - be safe - you got kids to think of.
D