Matthew Dovel says he calls himself a hostile witness to heaven and hell." Dovel is one of the thousands of Americans who have reported what are called near-death experiences. Many people brought back from the brink of death swear they've been to heaven. Far fewer report visiting hell, but Dovel believes he's seen both. Dovel's first near-death experience happened when he was 12 years old and was trying to swim the entire length of a pool underwater. As he surfaced, his friends playfully pushed him back under. "I was completely out of breath," he said. "The instant that I took the breath of water in, a white light engulfed me. And I flashed back over my life. It was just all these good moments in my life. I was completely happy to be at this place." In that moment, Dovel says, a "beautiful creature" came out of the light. He said you've got to go back." Dovel had been rescued by his friends, but that glimpse into the afterlife left him confused and profoundly depressed. "A rage came over me and an uncontrollable anger towards God that I had to come back." The next decade became a constant cycle of booze and cocaine-fueled binges [ending in a suicide attempt]. Dovel's lifelong wish to return to heaven ... ended in a personal vision of hell. "It was extremely hot and very humid and dense," he said. The experience then became extremely painful not physically, but emotionally. "I'm living in my past," he said. "And all the people that I had met throughout my life, they would come to me and ... start pushing and screaming and I would relive a moment that I had caused them pain. This is something so horrific that when I came out of that, I quit a $1,000-a-week drug habit cold turkey." Dovel sobered up and devoted his life to suicide prevention through International Suicide Prevention, his nonprofit organization.