Notice who you become at 11 p.m. on no sleep. That person makes a lot of your worst decisions.

Late and tired, you are a different operator: more certain, more reckless, quicker to send the message or say the thing. The decisions feel clear at the time, which is the trap, because clarity is one of the first things to go. A surprising share of the choices you regret were made in that window by someone running on empty.

Treat that hour as a no-decisions zone for anything that cannot be undone: no messages to people you are annoyed with, no purchases, no quitting anything. Write it in your notes instead and look in the morning. If it still seems right at eight, it probably is.