The first 6 months was really hard for me. I don't need to be social and I drank both out and at home. I've worked in bars my entire life and currently my wife and I own a wine bar/restaurant so booze is always around me.
Giving up alcohol was a life or death decision for me, fear of death ended up being a pretty strong motivator but it was still very hard and I've had my share of relapses.
It took about a year for my head to clear up.