From Napoleon Hill's research, he believed that this philosophy was responsible for the success of the most prominent Americans of his day and could be learned by anyone. Hill understood that negative emotions such as fear and selfishness were detrimental to one's quest for success and had no part in his philosophy of achievement.
He considered those emotions to be the source of failure for unsuccessful people. "There are no limitations to the mind except those we acknowledge." Napoleon hill books emphasizes helping others, goal setting, banishing procrastination and adopting the values of a true leader. Many success trainers today base their teachings on the works by Napoleon Hill. He has had a dramatic effect on millions of people worldwide.