Just thought I would add my two cents. My situation is a little bit like yours (shifting of start-/end-times, flipping (I do it on a Sunday night usually)). I a

Just thought I would add my two cents. My situation is a little bit like yours (shifting of start-/end-times, flipping (I do it on a Sunday night usually)). I am a still a student so I guess I don't have the problem of having to match other peoples' schedules, nevertheless I have been trying to fix this for a few months now and two things help a lot: 1). F.lux: it seems like now the computer doesn't keep me awake until 4am anymore. I feel naturally tired at around 11pm. 2). Mental preparation just before falling asleep. Irrespective of what time it is I try to always get up at the same time (that has kinda forced me into a pretty natural rhythm). The only way I manage to do that is by spending at least 5 mins imagining the next morning (kinda like watching yourself in a movie and seeing things step-by-step: I hear the alarm, I blink my eyes, I stretch, I get-up, I go to bathroom, I put the kettle on, I take a shower, ...). That helps a lot (I used to never even hear the alarm-clocks and now I sometimes wake up seconds before it goes off :-)