it requires doing it over and over again and accepting that it's gonna make you feel kinda shitty. I'm at my best by 11am. When I used to work overnight til 5am, 11am was when I woke up. When I worked bars 5-close, 11am. Now that I work a 9-5, I'm physically there at 9, but I'm useless til 11am. When I fall asleep has changed as my schedule did, for each of those schedules I was in bed at 6am, 4am and midnight respectively. But when the machinery came online has never changed: 11am.