I based my IWNDWYT in lifting and eating healthier, and for a few months it worked, but around a month ago some things happened that made it impossible... And I've been failing since.
Not drinking was just part of the package, so it's completely tied with those things that I still can't do, but I don't know, it feels like it wasn't that hard to stop and suddenly it is. And it's not like I'm a horrible person when I drink... But I should do better, be better... I don't know, maybe I'm just a hypocrite, talking to myself, typing to the void of the internet while having a beer and thinking that I shouldn't... but I whish I didn't like drinking and wasn't doing it right now...
Maybe try one commitment at a time and then add one in every few weeks? Stopping drinking WILL make lifting and eating healthier easier, but it will start making you healthier NOW. :)
I've read several quit lit books and the one that spoke to me the most was This Naked Mind. It helped a lot to understand what alcohol does to the chemicals in your brain and help break that cycle.