Hi GreenPepper, welcome.
It's great you are identifying where alcohol is holding you back. Sounds like you'd get so much more productivity back if you can stop for at least a while.
Don't worry too much about getting your head around long term if it's too much to think about now. There are plenty of blogs and articles out there you can Google on people who give up for a month and see huge changes - some even want to keep going from there.