Beachyboy...Dee and others are right. Even though a break up is painful, there's a journey of recovery ahead.
Any break up takes time and adjustment. It hurts. Particularly when the person who has been your source of comfort is now the source of pain. Add to that losing the crutch of alcohol.
Are there any counselling services or hotlines you could call, even just to talk out loud, get it off your chest? Have you spoken to your doctor about giving up alcohol?
You have to make a plan to cope with all this, get through it....painful as it is.