Og Mandino was born on December 12, 1923. Og was the editor of a high school paper and planned to attend the University of Missouri's journalism school. But in the summer of 1940, before he was able to enter college, his mother died suddenly from a massive heart attack. Og went to work in a paper factory until 1942 then joined the Army Air Corps where he became an officer and a bombardier. He flew thirty missions over Germany on board a B-24 Liberator with fellow pilot and movie star, James Stewart.
After the war, Og found that few companies were hiring bomber pilots. As a result, he began selling insurance. Spending time on the road and sitting in bars at night, Og became an alcoholic. As a result he was unable to hold down a steady job and his first wife and child left him. On a cold November morning in Cleveland, Og almost took his life. Instead he headed over to the local library. Sorting through the books copies of self-help, success, and motivation books got Og’s attention. He selected a few and went to a table to read. Og returned to that library and many others around the United States. He devoured hundreds of books that dealt with success, and overtime he was able to conquer alcoholism. While visiting a Concord, New Hampshire library, he came across W. Clement Stone's book, Success Through a Positive Mental Attitude. It changed his life. Og eventually became a successful writer and speaker. He wrote the bestselling Greatest Salesman in the World and my favorite, The Greatest Miracle in the World. His books have sold over 50 million copies and have been translated into over twenty-five different languages. He was the president of Success Unlimited magazine until 1976 and is an inductee of the National Speakers Association's Hall of Fame.