Your Brain Has A "Delete" Button -- Here's How To Use It
Halibutboy Flatfish stashed this in Science
TL;DR Think happy thoughts and sleep a lot.
Sleep prunes the thoughts we don't dwell on.
So don't dwell on bad thoughts!
Disrupting brain activity in sleeping mice, specifically during the rapid eye movement (REM) phase, can stop the animals remembering things they learned that day, a study suggests. It is the clearest evidence to date that REM sleep is critical for memory.