I wonder why people worry about how good <anything> they are. Isn't life all about continuously improving yourself and using whatever skills you have to create

I wonder why people worry about how good <anything> they are. Isn't life all about continuously improving yourself and using whatever skills you have to create value for yourself and this world? Doesn't matter how good/bad you are there is always room for improvement. "Dealing with failure is easy: work hard to improve. Success is also easy to handle: you've solved the wrong problem; work hard to improve." - Alan Perlis