"We should begin by recognizing the reality that just because something is good is not a sufficient reason for doing it. The number of good things we can do far exceeds the time available to accomplish them. Some things are better than good, and these are the things that should command priority attention in our lives."
- Dallin H. Oakes, "Good, Better, Best"

That's basically what this book is about- learning to say no to some very good things so that you can pursue the best things.

I would love to see more people read this book. It's not a perfect book. As other reviewers have pointed out, many of the examples given are not great, and McKeown really likes to name-drop Stanford and the Silicon Valley tech culture. But the ideas in this book completely changed my outlook.