The only certain means of success is to render more and better service than is expected of you, no matter what the task may be. This is a habit follo… - Og Mandino

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The only certain means of success is to render more and better service than is expected of you, no matter what the task may be. This is a habit followed by all successful people since the beginning of time. Therefore I saith the surest way to doom yourself to mediocrity is to perform only the work for which you are paid.

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About Og Mandino

Augustine "Og" Mandino (12 December 1923 – 3 September 1996) was a "sales guru" and author, most famous for his book The Greatest Salesman in the World (1968).

Biography information from Wikiquote

Also Known As

Alternative Names: Augustine "Og" Mandino II
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