An inch of time and an inch of gold

I didn't sleep well the day before yesterday. I stayed by my side last night, and it’s better to eat out. I went to bed until half past nine this morning, a lot of things for two hours
Middle-aged perception: The most important thing every day is not to plan, not to write code, not to read, not to play games, not to watch movies, or to exercise. The most important thing is only once a day: stay prepared for "8-9 hours" sleep.

Only when you go to bed early, every moment mentioned above can be done. It is the most serious "waste of time" to spend time at night and not go to bed early.