If there is one management thinker who has spent a large part of his waking hours trying to figure out what really drives superlative corporate performance, it is Jim Collins. Over his career spanning 25 years, Collins has researched this overarching theme from every possible angle and the result of that is a series of co-authored books starting from Built to Last, Good to Great, How the Mighty Fall and Great by Choice. One of his most insightful contributions was the concept of Level 5 leadership that busted the traditional belief that CEOs have to be charismatic to deliver outperformance.