Moses and Jesus had the same problem as you. Not drinking, but being a slave to their desires. They fasted for 40 days. That is the best way to give up drinking (but not 40 days) but you will be very happy to eat again. Drinking was bad so this is like a penitence. Site below has quotes by 18 MDs about fasting including the mental benefits. See
Lemonade Diet and Fasting.