Fat Fyes - you CAN do it! It may not be easy, but believe me, once you decide you're going to, nothing can stop you. The important thing is to make the decision - right, that's it, I'm not drinking. There will be times when it's very hard, but you have to keep reminding yourself why you stopped. Also, try imagining how pissed off with yourself you'll feel next day if you slip, and how good you'll feel if you don't.
This all sounds a bit cliched, I suppose, but it does come from experience.
Keep at it - remember that you've got all of us lot behind you as well!
Peace,
Bunbury.