For me the solution was to install software that dims and shifts the screen colors to red with time. It makes me sleepy at around 22:00, so I just go to bed, a

For me the solution was to install software that dims and shifts the screen colors to red with time. It makes me sleepy at around 22:00, so I just go to bed, and wake up naturally at about 6:30. Before that I often stayed late and realized when it was already 1:00.