I'm like this. Not just in a commercial context, but also at home with pet projects. I go through phases of being extremely creative with things I come up with, for about 2 or 3 days, then I go back to normal for about 30 to 60 days before I get to that state again. Luckily I've been able to notice this behavioural quirk so I try to code/write as much as possible down to use as building block to use on my "boring" days, but sometimes it feels like I cannot remember doing it or it was a different person doing it, kinda baffling to be honest.

During the bursty periods, it affects both my creativity and the amount of work I output. I haven't found a way to trigger/force myself into this state yet. I've tried different sleeping patterns, food, sex, drugs & caffeine, different kinds of music etc, to no effect. Music has come the closest to getting me to that feeling/state.

Anyone else have more things to try?