Inside the minds of successful business owners. 'I wake up hungry, and I will not stop.'

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A traditional job typically comes with a regular paycheck and benefits — a measure of stability and predictability.

Entrepreneurship offers neither. It comes with risk and uncertainty. There is potential for a big payoff, but no guarantees.

Popsmith CEO Tal Moore put it bluntly: "You have to be insane to be an entrepreneur," he told Business Insider. "Because there's so much risk. There's so much turbulence."

He and his cofounder nearly ran out of money while building their high-end stovetop popcorn popper .

"I ended up selling $600,000 worth of my personal stock to keep us afloat," Moore said.

It was stressful, of course, but Moore felt he had to find a way through — not only because he had invested heavily in Popsmith, but because friends and family had, too.

"They bet on me. They bet on my brand," he said. "If you lose your own money, that's one thing.…