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)
 
