Same here, how much money did i not spent on alcohol. And it's not only the alcohol, i used to buy all kind of things that i didn't need on internet when i was drunk, gambling etc. I even don't wanna know how much it was.
But that is the past you can't do anything about it. My psy calls it "learning money". Everytime i want to drink again i'm thinking about it, and i have to say it works, i never want to be in that situation again