While many books explain the personal benefits of "positive thinking", repeating positive mantras, and taking positive action, this book is critically important because it shows you just how much advantage an optimistic outlook provides. The evidence is so overwhelming that I found myself realizing that everyone needs to adopt more optimism in the important areas of their life. I liked the self-administered tests in the book for checking my optimism, that of my wife, and that of my children. I have always prided myself on being realistic, and still value that quality. What I learned is that being realistic should be combined with feeling optimistic about creating ways to improve the realistic situation as I understand it. That distinction is one that has been critically valuable in my life. I strongly recommend that you read this book, and share it with people you care about. For an organization, thinking about these issues could be a critical advantage.