Og Mandino

Og Mandino was an American author, motivational speaker, and entrepreneur. He is best known for his self-help books, particularly 'The Greatest Salesman in the World', which has become a classic in the industry. Og Mandino was born in 1923 and passed away in 1997. He was a pioneer in the self-help genre and his work continues to inspire people around the world. Og Mandino was a prolific writer and wrote over 30 books on topics such as sales, marketing, and personal development.