I'm very aware of how much I drink because my mother is an alcoholic.
Although I wouldn't say I drink much, if I ever have a period of "regular" drinking I will go T-Total for a month or so just to prove to myself I've not become addicted without noticing. And by regular, I mean each weekend for 4-6 weeks - unless something is going on, I generally only drink when I don't have work the next day
Also if I ever say or think to myself that I need a drink, I won't have one - wanting is one thing, needing is an area I'd rather not go