Failure brings humility. It develops your character. It helps you laugh at your mistakes and not take things so seriously. Like a plant placed from the shade into sunlight, your growth rate will accelerate 10x.
In their eyes, if they suck at something, it means they suck. Since their self-worth is tied directly to their performance, any failure is proof they aren’t good enough.
As Charles Bukowski said, “writing about a writer’s block is better than not writing at all”