Level 5 Leadership

Level 5 Leadership is a concept developed in the book Good to Great. Level 5 leaders display a powerful mixture of personal humility and indomitable will. They're incredibly ambitious, but their ambition is first and foremost for the cause, for the organization and its purpose, not themselves. While Level 5 leaders can come in many personality packages, they are often self-effacing, quiet, reserved, and even shy. Every good-to-great transition in our research began with a Level 5 leader who motivated the enterprise more with inspired standards than inspiring personality.

source: HBR