One of life’s axioms — some of us are born to succeed, and some are born to suffer.The one’s who demand a pat on the back are those who have overcome serious physical challenges, and instead of letting them stand in their way, they overcome them simply through grit and determination.Take Melissa Stockwell, for example. She is a war veteran with the U.S. Army, who is a Purple Heart recipient, para-olympian, para-triathlete despite the amputation of her leg above the knee 12 years ago.In 2004, Stockwell lost her leg in Iraq when a roadside bomb exploded during a convoy. A ...