ref: http://www.success.com/article/the-success-25s-legends-in-personal-development
- Maya Angelou (1928–2014)
- Dale Carnegie (1888–1955)
- George S. Clason (1874–1957)
- Stephen Covey (1932–2012)
- Viktor Frankl (1905–1997)
- Paul Harvey (1918–2009)
- Napoleon Hill (1883–1970)
- Charlie “Tremendous” Jones (1927–2008)
- Og Mandino (1923–1996)
- Orison Swett Marden (1850–1924)
