They don’t hesitate to learn from their mistakes.
Mistakes are inevitable. Sooner or later something goes wrong, and an unaccounted for variable emerges and places a grave dent in our previously well-laid schemes. You can’t always have everything under your control, and we do not have the degree of awareness necessary to view every possible angle.
Mistakes are there to remind us of our flaws and force us to mitigate the impact they have on our lives. Mistakes can teach us a lot about our lives and ourselves, but only if we let them.
What they do instead:
Learn from your mistakes means finding what is worth salvaging from your unfortunate experience, realizing what went wrong and finding a way to avert it in the future.
Smart people use this input to work on themselves and change the things they have the power to change.
Arrogant people look for excuses and choose to blindly believe in their judgement without any retrospect. Not only does this kind of behavior hinder your future success, it also drives people and allies away from you.