Good choice,
Use your kids as a springboard towards your sobriety, they don't deserve a drunk mum and being sober will help you do things good with them,
I took my5 yo little boy to football training this evening, up until I called it quits on the booze that was something that my wife had to do. I feel so bad now when I'm there and I see the other boys with their dads knowing that I've missed out on so much already. I just thank god (and I'm not religious) that I saw sense before it was too late.
You're doing the right thing,
Good luck,
Bruno.