How do the leadership theories presented in "The 21 Irrefutable Laws of Leadership" challenge existing practices in the field?

The leadership theories presented in "The 21 Irrefutable Laws of Leadership" challenge existing practices in the field by emphasizing the importance of self-development and the development of others, rather than focusing solely on business or organizational success. They also draw from a wide range of industries, including business, politics, and sports, suggesting that effective leadership principles are universal and can be applied in any context. This broad perspective challenges the notion that leadership practices should be industry-specific.