Sebastian Junger has made a career out of winging it. In 1993, while trying to find someone to publish his eventual bestseller The Perfect Storm, he flew to Bosnia, where, with no experience and no credentials, he figured he'd make a go as a war reporter. Seven years later, having spent time in battle zones across the globe, he was in need of a refuge—a place where he could unwind back home. So he and fellow writer Scott Anderson decided to open their own bar, the Half King, on Manhattan's West Side. For his latest book, War, Junger embedded with a platoon of American soldiers in Afghanistan for a total of five months, including several stints alongside photographer and cameraman Tim Hetherington. The two decided to shoot and self-finance a documentary film—a first for both of them. The result, Restrepo, which airs this November on the National Geographic Channel, won the Grand Jury Prize for documentaries at Sundance, in January. All of which is to say that Junger, now 48, is writing his own story. In The Path of Most Resistance, Outside's ERIC HANSEN gathered some of the high points.