My improv teacher said to us tonight: “It’s not a mistake unless you make it a mistake.”
He was talking about improv, as you may have guessed, but I’d argue this is true in life, to a large extent.
Sure, there are big mistakes we need to be accountable for, and take the lesson from those big ones, but don’t dwell. So many little mistakes aren’t even noticed if you don’t call attention to them. Make the mistakes seem part of what you meant (if you can). Otherwise, own the mistake and move on.