It is estimated that 1 out of every 9 Americans is in the business of sales, but that's only people earning a paycheck. When you think about it, all of us use persuasion, whether we are trying to talk our kids into the choice we prefer or helping colleagues see our point of view. Selling isn't just about stuff any more; it has become more psychological than material. It's about swaying things in your favor, a skill that everyone can use no matter what your occupation. Perfect your pitch and learn to seal the deal with Pink's new book.