I commend you for this decision. I understand how tough it is to feel like you are giving up everything but, in reality, you will get so much more when it is all gone. I could start naming the list but I think that you will be able to make your own list of positives soon.
Start with putting you and that precious little girl at the top of the list! You are both far more important than any drug/alcohol out there. I also understand the moderation problem too. It affects all aspects of my life, not just the drugs/alcohol problem. Funny how our brains work.
I wish you all the best!! Keep your mind focused on what you want so that you do not lose sight of it.