Carol and I are reading John Ortberg's If You Want to Walk on Water, You've Got to Get Out of the Boat. It's built around Matthew 14:25-32. In the first chapter, he poses the question of whether Peter "failed" when he got out of the boat, walked a ways toward Jesus, and then began to sink.
Part of his answer to the question includes this illustration:
Somebody once asked Winston Churchill what most prepared him to risk political suicide by speaking out against Hitler during the years of appeasement in the mid-1930s, then to lead Great Britain against Nazi Germany. Churchill said it was the time he had to repeat a grade in elementary school.
"You mean you failed a year in grade school?" he was asked.
"I never failed anything in my life. I was given a second opportunity to get it right."