“I learned failure early and mastered it.”

"On Medical Education" (1870) http://aleph0.clarku.edu/huxley/CE3/MedEd.html
1870s
Context: I can assure you that there is the greatest practical benefit in making a few failures early in life. You learn that which is of inestimable importance — that there are a great many people in the world who are just as clever as you are. You learn to put your trust, by and by, in an economy and frugality of the exercise of your powers, both moral and intellectual; and you very soon find out, if you have not found it out before, that patience and tenacity of purpose are worth more than twice their weight of cleverness.

2000s, Welcome to the Big Darkness (2003)

O Magazine (January 2007), pages 160 & 217
Context: What I learned at a very early age was that I was responsible for my life. And as I became more spiritually conscious, I learned that we all are responsible for ourselves, that you create your own reality by the way you think and therefore act. You cannot blame apartheid, your parents, your circumstances, because you are not your circumstances. You are your possibilities. If you know that, you can do anything.

[John Sears, RTNDA Communicator, RTNDA; The Association; Radio Television Digital News Association; Volume 54, August 2000, Interview with Ed Bradley]

"The Making of a Scientist," p. 14 <!-- Feynman used variants of this bird story repeatedly: (1) "What is Science?", presented at the fifteenth annual meeting of the National Science Teachers Association, in New York City (1966) published in The Physics Teacher, volume 7, issue 6 (1969), p. 313-320. (2) Interview for the BBC TV Horizon program "The Pleasure of Finding Things Out" (1981), published in Christopher Sykes, No Ordinary Genius: The Illustrated Richard Feynman (1994), p. 27. -->
What Do You Care What Other People Think? (1988)
Context: You can know the name of that bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird. You'll only know about humans in different places, and what they call the bird. … I learned very early the difference between knowing the name of something and knowing something.

Boy Genius Report: "When I think about my career, my successes are built on learning from failures: Microsoft CEO Satya Nadella" https://www.bgr.in/news/when-i-think-about-my-career-my-successes-are-built-on-learning-from-failures-microsoft-ceo-satya-nadella/ (29 December 2015)

On the incidents in her career in Las Vegas as quoted in "Reddy: Full Speed Ahead... and Back". Hawn, Jack, L. A. Times, 25 July 1987 http://articles.latimes.com/1987-07-25/entertainment/ca-1064_1_full-speed