 worry about difficult things or try to figure out difficult issues, solve problems after 8 o'clock at night. Because what would happen is that many people, they lay awake through midnight, 1 o'clock, 2 o'clock in the morning trying to solve tomorrow's problems. And what they're doing is they're actually cheating tomorrow by stealing sleep. And so I just made a hard and fast rule that 8 o'clock, I'm shutting everything off.