I first stopped drinking when I was 29. I was kind of in your shoes...I didn't HAVE to have a drink to function, but when I did drink I couldn't control how much I drank. So I bet my ex that I could go 1 month drinking only 1-2 beers a day. Usually I drank 6-8 beers on the weekdays and a 12 pack or more on the weekends (lost count most of the time lol). Well I made it exactly 1 month and I celebrated my feat by getting hammered until I passed out. Needless to say I proved to myself that I could white knuckle it to win the bet, but I was back to my usual amount on day 31 and quit a few months later.