Augustine "Og" Mandino II (December 12, 1923 – September 3, 1996) was an American writer. The author of The Greatest Salesman in the World, his books have sold over 50 million copies and have been translated into over 25 languages. He was the president of Success Unlimited magazine until 1976...
Failure will never overtake me if my determination to succeed is strong enough.
Do not listen to those who weep and complain, for their disease is contagious.