Jack and Garry Kinder are in private practice as well-known sales and management consultants to more than 300 companies throughout North America. The Kinders have directed the popular Purdue Management Institute for the past 25 years. They have written several bestselling books for salespeople and managers including: "Winning Strategies in Selling," "Upward Bound" and "Secrets of Successful Insurance Sales." The Kinders have also developed numerous audio and video instructional programs with the well known commentator, Earl Nightingale.