Five years ago, Jim Collins asked the question, “Can a good company become a great company and if so, how?” In Good to Great Collins, the author of Built to Last, concludes that it is possible, but finds there are no silver bullets. Collins and his team of researchers began their quest by sorting through a list of 1,435 companies, looking for those that made substantial improvements in their performance over time. They finally settled on 11–including Fannie Mae, Gillette, Walgreens, and Wells Fargo–and discovered common traits that challenged many of the conventional notions of corporate success. Making the transition from good to great doesn’t require a high-profile CEO, the latest technology, innovative change management, or even a fine-tuned business strategy. At the heart of those rare and truly great companies was a corporate culture that rigorously found and promoted disciplined people to think and act in a disciplined manner.