No Limits: The Will to Succeed

In some ways, Olympic swimmer Michael Phelps represents the difficulties of contemporary American life. A child of divorce (his parents split when he was 9), Phelps was victimized by bullying as a kid. He was also diagnosed with Attention Deficit/Hyperactivity Disorder (ADHD) and later prescribed Ritalin for the condition.

Now, 14 Olympic gold medals later—16…