I had a friend who was a wonderful cook/baker, but she always found something wrong with everything she made. She frequently sent home her "mistakes" with me for my family to eat, and we never found a thing wrong with them as we devoured them.
Then one day she made me a special cake for our family. I took it home and said who had made it, and my youngest son asked while eating a piece, "What's wrong with it then?" I told her his remark, and she began to see that no one but her found flaws with her wonderful baking and that she was making people look for flaws in her work. It helped, but she never did really believe her cooking was as great as everyone else thought it was. Just human nature!