Book excerpt: Persuade others to do what you want--for their own reasons. If you need the best practices and ideas for making deals that work--but don't have time to find them--this book is for you. Here are 10 inspiring and useful perspectives, all in one place. This collection of HBR articles will help you: - Seal or sweeten a bargain by uncovering the other side's motives - Conquer faulty assumptions to make the right deals - Forge deals only when they support your strategy - Set the stage for a healthy relationship long after the ink has dried - Make promises you can keep - Gain your adversaries' trust in high-stakes talks - Know when to walk away