We tend to suppress our anger against each other which ultimately leads to big quarrels some day. If two people have been naturally expressing their differences of opinion or having small arguments on regular basis, they will never have resentment or enmity of a lifetime.
In existence, no human being is perfect. Every person has his own unique nature and individual field of expertise. Even those, whom we know as gods were unaware of the knowledge of science all their life. So, instead of paying attention to your shortcomings, concentrate on your talents and harness your potential.