I read the book Drive back in early 2010 and four years later I still continuously think back to its content as I see real life examples all around me. Unlike an economics or finance book, the information contained in the text is just as valuable today (if not more) because there are no outdated charts or data.
The book is about what motivates people and its findings will probably surprise you. While I definitely recommend taking the time to read the book, the following two videos provide a great preview of its content.
Drive: The Surprising Truth About What Motivates Us:
Author Daniel Pink on what motivates people: