When my Dad died, I didn't realize how much my drinking had picked up, until I almost killed myself and a very good friend who had just become a father. I quit drinking cold turkey, for 365 days with no cheating. On the 366th day I drank a beer. Fortunately I can set a limit and keep it, and I Uber if I'm going out and having drinks. I think it's a personal choice for most, sickness for some.