This HBR post from Justin Menkes is another contribution to the ever-growing body of evidence that effective leaders are good people that care for others. As Justin Menkes states:

Only an individual who feels genuinely invigorated by the growth, development, and success of others can become an effective leader of an enterprise.

When reading this article you will find a strong correlation between effective leadership and engagement.

Narcissism: The Difference Between High Achievers and Leaders – Justin Menkes – Harvard Business Review.