"The opportunity of adversity," and a thought on "want"

What I like most about this talk is not just the thinking on achievement through adversity, but that it speaks deeply to the counterintuitive and troubling problem of how to define what it is we "want" in life.

"If you had asked me at 15 years old if I would have traded prosthetics for flesh and bone legs, I wouldn't have hesitated for a second. If you asked me today? I'm not so sure."

I'll certainly continue asking the question: "what does it actually mean to 'want' something?"