Whatever I start the night drinking on, is what I stay with.
If I’m playing a show, then I’m allowed a drink per number of bands before mine. (Which never worked, because we always played last.)
If doing shots, sip them. (Yeah, right.)
Try not to drink too much during the week, so as to not miss work.
Playing out of town? No rules.
Not driving? No rules.
Try not to drink at the bars where friends work, since they always pour heavy, and give free shots
…and so many more that “seemed to work”, and when you felt they did, you start cutting yourself some slack, and then you’re right back where ya started.