Don't the two go together? Shame drives people to cover up their mistakes. That produces more fuckups.

There's an old improv game where someone suddenly points to you and you have to continue their story without missing a beat and without doing a bunch of other arbitrary things. It's designed to be impossible. But if—or rather when—you fuck up, the rule is that everybody applauds, praises you, and gives you hugs. It's disorienting at first, but then you can feel yourself acquiring entirely new patterns in response to mistakes.