The worst damage that can happen to a person, is lie to him/herself. Alot of people shy away from the truth.
In your previous post about about correction, I said ladies feel embarrassed when being corrected and this pose greater risk to one's self.
The outer behaviour is the reflection of the mind. Politicians are one of those who hid the truth and hates it when be confronted with it and when that happens, they always result to defense instead of accepted mistakes.