How the F do you drop a lifestyle that you know is bad, yet you realize that the alternative is 50 hours a week for one third of what you were making before?
Watch someone go through the DTs or read up on liver and kidney failure, heart attacks, and strokes if you want some inspirational material on what happens when you chronically drink for long periods of time.
Sometimes watching your own behavior on camera, or hearing from someone you respect that you're out of control will make the difference. But in the end it's your choice to make. I don't hear any former addicts ever say they were happier when they were messed up all of the time, they seem happier with a quieter, healthy lifestyle.
Good luck with whatever you choose.