This is the big smash hit from Jim Collins, and you probably don't need me to promote this this book. But you may not know that this is the middle book of a three book series that shares a common methodology and should be read as a group. The first book is "Built to Last", and the final book is "How the Mighty Fall". I actually read them in reverse order due to an odd combination of circumstances, but the three books together tell a very interesting story.

Jim has a big idea that involves the metaphor of a flywheel. He sees the really great companies as ones that find the key process and then keep "pushing the flywheel". This metaphor works if you understand that a flywheel is a great way to store a lot of energy that you can then tap to keep moving. It is a metaphor I have used in my own life to keep doing things like exercising.