Understanding people certainly impacts your ability to communicate with others.
The rallying call to people is to give them hope. When you have hope, that's huge.
Life can be boring unless you put some effort into it.
It's said that a wise person learns from his mistakes. A wiser one learns from others' mistakes. But the wisest person of all learns from others's successes.
Anyone can steer a ship, but it takes a leader to chart the course
Great leaders understand that the right attitude will set the right atmosphere, which enables the right response from others.