We know it’s easier to see the mistakes of others than it is to see our own and that’s not helpful when it comes to the question: Do you know what you are doing? Compared to you, I might be foolish enough to think I do.
Proxy measures don’t help either: You win more, you earn more; you must be getting better.
I’ll leave you with a question not from HR, but from a place of curiosity: How do you know you are getting better at what you do?