Thirst

At 28 years old, Scott Harrison had it all. A top nightclub promoter in New York City, his life was an endless cycle of drugs, booze, models—repeat. But 10 years in, desperately unhappy and morally bankrupt, he asked himself, "What would the exact opposite of my life look like?" Walking away from everything, Harrison spent the next 16 months on a hospital ship in West Africa and discovered his true calling. In 2006, with no money and less than no experience, Harrison founded charity: water. Today, his organization has raised over $750 million to bring clean drinking water to more than 17.4 million people around the globe.