I love the story of this book, but some of the lessons are more memorable than others. I remember fighting currents trying to swim in the ocean as opposed to the swimming only when the current is with me (like sea turtles as mentioned in the book). This could be applied to stock investing, physical training, or even day to day work. But it's easy to forget in the heat of the moment when I'm frustrated (going against the current).
What is your favorite lesson from the book?