I do but I try to schedule my moods to things I "need" to get done. Like I know right now the birth control pills I'm on will give me a lull after the menstrual cycle for about a week, and then I'll spend the week after that feeling like shit cause I got nothin' done, and then the week leading up to the next placebo pills will be productive and it just makes never ever want to stop taking BC to take the placebo pills. That up and down in creative productivity just.... urgh. And it's not a BC thing either - since I always have had a burst of energy leading up to the cycle and it'd result in a crash of energy.
In college it was ... easier because I was set to a schedule. I think I was most productive overall when I was obsessed with time when I was doing 20/credits. I had class Mon/Wed 6p-9pm, Tues/Thur 6p-9pm (almost always ran til 930), Fri 1pm-3pm, Saturday 9a-noon. So I only had sundays free. It resulted in an insane sleep schedule that no one should do unless you really want to, but it did result in my being obsessed with time. So much so that I would procrastinate doing homework by eating/showering til Sunday'd hit at about 5pm and I'd be free of work til Monday. But that's because I worked my butt off.
I just was watching a video earlier this week that was about if you feel like you can only do something when you're motivated, treat it like a job. Start off committing 3hrs a day in "one sitting" so you either wake up super early, or delay eating dinner when you get home from your muggle job basically, or stay up later. Or just don't watch tv. And as time goes by you'll be able to swap it to longer: ie 6hr but 3hr morning and 3hr evening. I like the idea and I'm going to try to follow through with it. I'll be swapping between stuff that I know I'll do anyway like youtube, drawing, and writing, and even if I draw nothing I'll have physically used the muscles (hand, arm, shoulder, back, and brain of course).
it'll be a trip... dreads