How do you take your business to the next level? How do you master the art of sales? What mistakes should you avoid making? Most entrepreneurs are geniuses and masters of their craft—but struggle with sales. Marty Park has founded 13 successful businesses in seven different industries. Now, with over 16,000 hours of business coaching experience, he's one of the best people to turn to when you need to boost your sales game. Marty will teach you how to transform from expert to salesman in this throwback episode of Negotiations Ninja. Check it out!