Self reflection and self correction is the core of self cultivation. When one reflects, mistakes are realized. When one corrects, mistakes are reversed. By self reflecting and self correcting, one evolves and changes accordingly.
Many leaders do not self reflect and therefore can not self correct. They believe their actions are correct and blame their mistakes on others. As these leaders mature, they become corrupt and unstable. Many unfavorable traits start to appear for these leaders.
Only through one’s reflection can one corrects. There is a reason why numerous failures can make one stronger for failures constantly breaks an individual to humbleness. When one is humble, they can start to reflect and begin the correction process. Only then will one be able to self cultivate.