Why do enlightened individuals accept their imperfections and the impermanence of life so readily?

When do growing pains start, how can parents recognize them, and what can actually help relieve them?
Why do some people destroy good relationships when everything is going well?
How do you differentiate between advice that helps you grow and advice that might lead you away from your true self?
When was the last time you were involved in a heated clash with someone, and what was it over?