An inspiring TED talk, in which Aimee Mullins deconstructs the term 'disability,' and underscores the opportunities adversity can bring us:
On prognosis and potential: "There is a difference between the medical condition, and what someone might do with it"
"All you need is one person to show you the epiphany of your own power, and you're off."
It's 22 minutes long, but well worth watching to the end.