My illness may define the length of my life, but it won't define how I live it. My disability gave me the ability to understand and help others. And now I finally feel like I am living. 17-year-old Lewis Hine is a global phenomenon. Diagnosed with a life-threatening brain tumor and water on the brain at 17 months, he wasn't expected to survive. But Lewis proved everyone wrong; he's not only surviving but thriving. In one Facebook post...