Og Mandino wrote a simple book that has sold over 50 million copies, The Greatest Salesman in the World. If you have not read this classic get a-hold of a copy now!
Mandino was President of Success Unlimited Magazine and prior to that he was a US Military officer and Bombardier in 30 missions over Germany in WWII. During that time he also flew with fellow pilot and future movie star James Stewart. He was also a member of the National Speakers Hall of Fame.