Understanding how other people behave takes intelligence, but to know ourselves takes enlightenment. The poor project manager tries to use force to get the other team members to do what he wants. But to manage ourselves takes true power.
The wise project manager is content with what he has. He can live simply and enjoy prosperity and free time. If our goals are clear, we can achieve them without fuss.
Lao Tzu tells us:
He who understands others is wise,
He who understands himself is enlightened.
He who masters others has strength,
He who masters himself is strong.
To recognize enough is to be rich.
He who acts forcefully has ambition.
He who stays where he is endures.
He who dies but is not forgotten, is long lived.