John C. Maxwell is one of today's top leadership thinkers. Here's what he thinks about leadership. ... 15. “If you are a leader, the true measure of your success is not getting people to work.

Leadership guru John C. Maxwell says he has sold more than 20 million books during his 30-year career, ... he paid $4.15 million for a 7,400-square-foot condo at Ritz-Carlton Residences Singer Island.