I feel that this problem might be a part or some shape of an actually quite complex and many-faced impostor syndrome and the best way to fight it would be to try to learn and accept the idea that it is totally fine to not know something or to not be exceptionally good at something. Moreover, only by accepting these ideas and keeping them in mind helps us open up our hearts for new discoveries and that is the only way how do we learn. It is hard to learn something new if you refuse to accept or have hard times accepting that there are things that you simply do not know yet.