Rainesford Stauffer said:

As children, we’re trained to avoid failure, not learn from it. It’s presented as a sign of inadequacy, even worthlessness. I think this is the hidden cost of a K-12 curriculum that is achievement-oriented. Failure is never presented to us as a different kind of educational experience, a universal (and ceaseless) part of being human.

via https://www.nytimes.com/2017/07/17/opinion/dropping-out-of-college-into-life.html