David Mattson is the CEO of Sandler Training , an international training and consulting organization. He has been a trainer and business consultant for management, sales, interpersonal communication, corporate team building, and strategic planning throughout the United States and Europe. He is the author of The Sandler Rules, Sandler Success Principles, and Magical People Skills, and coauthor of Five Minutes with VITO, How to Make the Most of Your Time with the Very Important Top Officer.