Nobody is perfect at everything. Some people have, through making mistakes and learning from them, perfected specific skills. Still, those people have imperfections in many other areas. Some learn more than others from their mistakes. The willingness to examine yourself and tell yourself the truth about your failings is key to learning and improving.

“I’m selfish, impatient and a little insecure. I make mistakes, I am out of control and at times hard to handle. But if you can’t handle me at my worst, then you sure as hell don’t deserve me at my best.”
― Marilyn Monroe