Jim Collins' book Good to Great analyzes what led companies to go from being good companies to great companies that achieved long-term stock returns three times greater than their industry. The key factors identified were having Level 5 leadership, confronting the brutal facts, and developing a Hedgehog Concept of focusing on what they could be best at and their economic engine. Companies that made the transition, like Abbott and Nucor, established a culture of discipline where highly self-motivated people were given freedom and responsibility to fulfill the company's Hedgehog Concept.