Chris Reining's career started out according to plan. "I was working in IT and it was my dream job for a while," the now 38-year-old tells CNBC.
He bought a condo and a BMW and shopped at Whole Foods every week: "I was living a pretty good lifestyle. But in my late 20s, I started becoming a little disillusioned with the whole 9-to-5 grind. It was so repetitive."
Reining, who is based in Madison, Wisc., wanted something different, he says: "The freedom to do what I want to do, when I want to do it."