The following quote brings to mind frequently discussed forum topics of procrastination, risk-taking, learning from mistakes, growth or fixed mindset, and fear of failure.

Far better it is to dare mighty things, to win glorious triumphs, even though checkered by failure, than to take rank with those poor spirits who neither enjoy much nor suffer much, because they live in the gray twilight that knows not victory nor defeat.
Source:
Theodore Roosevelt speech, "The Strenuous Life" (April 10, 1899), Paragraph 4.
Voices of Democracy, U.S. Oratory Project, University of Maryland
link - https://voicesofdemocracy.umd.edu/roosevelt-strenuous-life-1899-speech-text/