Drive: The Surprising Truth About What Motivates Us

The book is short (considering the subject) and the chapters straightaway hit the points it makes: forget carrots and sticks and focus on autonomy, mastery, and purpose. Further, the book ends with its summary in various formats.

And of course, there's the subject itself. By now, there's not much to say because the ideas here have been adopted into various organizations in some fashion and these no longer feel “surprising”. But it is still a compelling read.