"The superheroes you have in your mind (idols, icons, elite athletes, billionaires, etc.) are nearly all walking flaws who've maximized one or two strengths. Humans are imperfect creatures. You don't "succeed" because you have no weaknesses; you succeed because you find your unique strengths and focus on developing habits around them. . . . Everyone is fighting a battle [and has fought battles] you know nothing about. The heroes in this book are no different. Everyone struggles."