"It is your responsibility to make sure that positive emotions constitute the dominating influence of your mind." ― Napoleon Hill From Napoleon Hill Author Added on 1/31/2026 About Napoleon Hill American self-help author best known for Think and Grow Rich. His work is associated with early 20th-century personal development and success literature. He wrote widely on achievement, motivation, and applied philosophy. Born: 1883-10-26 Died: 1970-11-08 View all quotes from Napoleon Hill