Attributed without citation in Blythe Camenson (2002) How to Sell, Then Write Your Nonfiction Book. p. 188
“Success comes from knowing that you did your best to become the best that you are capable of becoming.”
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John Wooden 64
American basketball coach 1910–2010Related quotes

“Any person capable of angering you becomes your master.”

Interview on Charlie Rose https://archive.org/details/WHUT_20100614_130000_Charlie_Rose (2000)

Don Soderquist “ The Wal-Mart Way: The Inside Story of the Success of the World's Largest Company https://books.google.com/books?id=mIxwVLXdyjQC&lpg=PR9&dq=Don%20Soderquist&pg=PR9#v=onepage&q=Don%20Soderquist&f=false, Thomas Nelson, April 2005, p. 115.
On working hard

The Great Master of Thought (Amen- Vol.3), Observing management

As quoted in That Summer in Paris (1963) by Morley Callaghan

Trump 101 The Way to Success (2007), p. 2
2000s