noun
ability to let things slide; power to not get worked up
Colloquial term for the mental skill of ignoring minor annoyances, criticism, or bad luck without getting upset. Often used in self-help or casual conversation.
ネットの悪口にいちいち反応しないで、スルー力をつけよう。
Instead of reacting to every nasty comment online, let's develop the ability to let things slide.
彼はスルー力が高いから、多少のトラブルでは動じない。
He has a strong ability to brush things off, so he doesn't get rattled by minor troubles.