Accepting that you’re wrong is difficult to do especially when it comes to things that you are well versed at. On the contrary, accepting the mistake and doing something about the mistake makes you a better man and is a sign of maturity. Having to do these will open your horizon on the possibilities that there is so much to learn out there? It does not make you less of a person if you accept things as they are. There are things that you may not know about and this is just fine. It should not be a burden to you.