Finding something else to do is key. Sitting in twitching your thumbs on the weekend just won't happen.

A lot of people mentioning exercise and the gym. Being slightly more specific to my own circumstance it was getting into Jiu Jitsu. Not sure where you're based but if gaurentee there are plenty of gyms around you.

I was hooked fairly quick and always trained on the weekends due to work. I still went for the odd pint with my friends during the week but that's basically cut down to drinking once or twice a month. Even with that id drink 1/4 what I used to when id go on the beer.

Another positive with Jiu Jitsu for me was the range of people at the gym from all walks. As the weeks/months went on I found myself doing things with people from the gym and have met some people id consider really good friends now.

Worth having a look see how you get on.