Rick Steves is one of the most trusted sources for Americans traveling abroad. But he once dreamed of becoming a piano teacher. That was before he backpacked along the Hippie Trail from Istanbul to Kathmandu in 1978, a trip that made him want to help others experience life-altering travel. We talk to him about his new book called “On the Hippie Trail: Istanbul to Kathmandu and the Making of a Travel Writer” about a life spent away from home.