The Mark of a Millionaire Author:Dexter Yager, Ron Ball Dexter Yager is a businessman and entrepreneur considered to be one of America's most influential and wealthy leaders. A millionaire many times over, Dexter Yager is also the author of eight best-selling books. He speaks frequently on the subjects of money management and financial success. His is one of few motivators whose... more » achievements are equal to his advice.« less