This 34-year-old went from a six-figure corporate salary to...

CNBC: Rodney Williams left a cushy corporate gig with a six-figure salary to build a start-up that sunk him six figures in debt. Now, that business, Lisnr, has raised millions of dollars in funding, has almost 40 employees and counts the likes of the NFL's Dallas Cowboys and NBC as clients.

The journey taught Williams, 34, a lot about success.