Why does the brain mostly remember tragic, bad or embarassing memories instead of the happy ones

Question

Why does the brain mostly remember tragic, bad or embarassing memories instead of the happy ones

In: 4262

Answer 1

So you don’t repeat them. You remember stupid shit you did way more than fine/normal/good stuff you did cause you don’t want it to happen again, if you forget, you will make the same mistake. You dislike feeling bad and embarrassed so you want to minimises doing that to yourself again.