I was an every other night type of drinker until just the past few months. I could polish off a whole 750 mL bottle of whiskey in a single night. Now it's most nights with maybe a single (usually sleepless) night once a week.
I used to do what I deemed "strategic hangovers" - if I knew I had something I needed to do on Wednesday morning, I'd make sure to drink on Monday night so that I wouldn't drink on Tuesday night and then I'd be hangover free for whatever it is I had to do on Wednesday morning.