Carl Sewell is the owner of one of the largest car dealerships in the United States, with more than one billion dollars in sales. He lives in Dallas, Texas, and speaks regularly to prominent executives and top corporations nationwide.

Paul B. Brown
, a long-time contributor to The New York Times and a former writer and editor for Business Week, Financial World, Forbes, and Inc., is a bestselling author who has collaborated on numerous business classics including Customers for Life and Your Marketing Sucks. He lives in Duxbury, Massachusetts.