This is a lesson we used in fall camp in '17 to emphasize the daily grind of improvement. There are video clips of Will Smith talking about his dad making he and his brother build a wall every day after school in front of his store...it took them a year and a half!
Goran Krupp, the 'crazy Swede' who rode his bike from Sweden to Mt. Everest, climbed it, and rode his bike home.
The story of the carpenter who built a home for his boss, but later found out (after it was built) that the home was a retirement gift for the builder.