Keep your Face to the SunShine
Improvement can occur only when we have the seriousness to learn a new thing seriously and this requires honest approach. This is one point and the other one is the acceptance of our ignorance in many fields where we have to make serious efforts to learn the same without any complex.
Knowledge is power.
We all know that only the empty leave will fly. If it is having some weight on it, it will not fly. Similarly, an empty vessel only can make big sounds. A person who is having some good knowledge will never try to show others that he is having a lot of knowledge and he will be a down to earth person only.
So one should always know that what he knows is very little and he should be humble to other people and should never try to say that he knows everything.