It took me about four months of being booze free before I realised any discernible benefits.
Those four months were full of “why the fuck am I doing this?”, “I don’t feel any different” “I’m fucked off that everyone else seems to be having a better time than me”, “I can’t sleep because I don’t have that sleepy booze feeling” etc..
Then at four months my outlook completely changed and I realised how much of better person I was without the booze - I hadn’t really noticed all the small things changing. Sleeping incredibly, better mood, more energy, more money, less weight and all that.