When I stopped drinking I was hyper focused on what excuses I would make for not drinking. The funny thing is that no one ever asked me why I wasn't drinking or just accepted my 'I'm a bit run down and on a health kick' explanation (which was also true) and left it at that. I noticed that many, many people just had one, or none, and no one questioned them on it either. It was a revelation.
It was daunting for the first few months to give up my best friend and the best/worst relationship I'd ever had - alcohol. EVERYTHING is better when I don't drink.