The way around a stupid move

You know once a in while, you make a stupid move because you listened to a friend. It's okay to do so sometimes. Sometimes you wonder is it worth it do so.

How costly are these mistakes? at the costs of losing another someone / friendship / relationship?
at the costs of losing money?

there are some things money can't buy. for everything else , there's Mastercard.

Well, just make sure you don't make the same mistake(s) again.