Action, you're bound to feel depressed at the moment - you're still withdrawing. You're not a failure, just trapped in a cycle that you really CAN get out of
I don't know your circumstances, but I found volunteering at the local homeless shelter, a GREAT help, as at least I had a roof over my head and it also showed me what like could become like, if I carried on the way I was going. Once I had, had a drink, even bills, would be put to one side as ' other people had worse debts ', in my drunken mind.
Have you thought about doing some voluntary work? Something that changes day-to-day life to give you a brand new beginning?