This 24-year-old used Snapchat to launch a startup so successful, he turned down jobs at Facebook and Uber -- all while fighting cancer

Khallil Mangalji 24-year-oldKhallil Mangalji is a happy guy. He just closed a $1.8 million round of venture funding for his two-year-old startup, Fiix, and got some good news about his health. The cancer tumor he's been fighting for the past year while launching his startup is in retreat and the prognosis for a full recovery is good, he told Business Insider. His young life is a reminder that good things often require hard choices,teamwork and, sometimes, fighting with everything you've got. An ...