It is so hard to stay at the "moderation level" I have tried many times and know now that I will always fail. Because the temptation to get a little more messed up will always be there. And soon enough your in it and in it deep.
Way to go on taking such a huge step. You can do it. and when you feel like having a drink come here or like someone else said go to AA. It really is a great place, it gives you the support that at times you can't give yourself.
Don't give up - the world is a much better place after addiction - maybe not right away - but little by little the good things that you forgot about come back - and that my friend is the most awesome thing in the world.