Ran into something like this with caffeine. I used to drink four to six pops a day. You wouldn't think it'd be a big deal, but cutting that out for a month took me from being tired all the time and getting up twice a night to take a piss, to sleeping through the night and actually feeling decent in the morning.

While I'm sure doing the same with alcohol would be different and potentially deadly (so I've read anyways), it couldn't hurt to cut it back or out completely. Livers definitely like it according to my doctor.