Tweet Effort only fully releases its reward after a person refuses to quit. Quote by Napoleon Hill. You May Also Like...Whatever the mind can conceive and believe, it can achieve.Patience, persistence and perspiration make an unbeatable combination for success.Every adversity, every failure, every heartache carries with it the seed on an equal or greater benefit.Before success comes in any man's life, he's sure to meet with much temporary defeat and, perhaps some failures. When defeat overtakes a man, the easiest and the most logical thing to do is to quit. T...Our greatest weakness lies in giving up. The most certain way to succeed is to try just one more time.Don't wait. The time will never be just right.Any idea, plan, or purpose may be placed in the mind through repetition of thought.