Giving

Bob Burg and John David Mann's The Go-Giver: A Little Story About a Powerful Business Idea quickly became a national bestseller. It's parable format told readers a great story that showed how giving could actually increase profits, rather than diminish them. More than that, it showed that those who don't give, actually struggled more, and were likely in a position to fail as opposed to those experiencing utmost success.
A great story, but for many, it posed questions ("it's a fine story, but does it really work in the reality of day-to-day business?"). To answer the questions, Burg and Mann just released Go-Givers Sell More, which is not a parable or story, but a straight-up guide about the values of giving. This seems to prove these guys aren't just good story tellers (they are that, too) but actually have clear details on how to apply these principles to your business; with examples and further insights.
Based on Five Laws (Value, Compensation, Influence, Authenticity, and Receptivity), the book is far more than a sales book (despite what the title implies). It teaches us about customer relations - make that human relations, and how to form long term, profitable relationships, where we don't just focus on taking from people, but truly doing business - a constant exchange of value - both material and otherwise. Awesome stuff.