App developer Apoorva Mehta almost gave up on being an entrepreneur until he figured out what he really wanted to do: find a hassle-free way to buy groceries. Five years after launch, the grocery delivery app Instacart is valued at $3 billion.

When Steve Case started out in the tech business in the mid-80s, the idea of the internet — as we think of it today — didn't exist. But with AOL, Case saw an opportunity to connect millions of people, through chat rooms, news updates, and the iconic greeting, "You've Got Mail."

As a refugee growing up in Tel Aviv, Haim Saban remembers not having enough money to eat. As an adult, he hustled his way into the entertainment business, writing theme songs for classic cartoons like Inspector Gadget and Heathcliff. But producing the mega-hit Mighty Morphin Power Rangers put him on track to becoming a billionaire media titan.

Ever since she was a little girl playing dress-up in her aunt's closet, Kendra Scott loved fashion. Her first business was a hat shop, which she started at 19 – it failed. A few years later, she started a jewelry business out of her spare bedroom. Today the company is reportedly valued at more than a billion dollars.

After living as a monk in India and running a plastics company in Florida, Manoj Bhargava decided to launch something new: a one-shot energy drink in a bright, battery-shaped bottle. Today, 5-Hour ENERGY is one of the most recognizable energy drinks in the world.

Twenty-five years ago, when Mei Xu emigrated from China to the U.S., she loved going to Bloomingdale's to gaze at their housewares. She eventually started making candles in her basement with Campbell's Soup cans, an experiment that led to the multi-million dollar company Chesapeake Bay Candle.

Before he turned 40, Nolan Bushnell founded two brands that permanently shaped the way Americans amuse themselves: the iconic video game system Atari, and the frenetic family restaurant Chuck E. Cheese's.

In 1962, Gordon Segal — with his wife Carole — opened a scrappy Chicago shop called Crate & Barrel. That store turned into a housewares empire that has shaped the way Americans furnish their homes.

As founder and CEO of Beyond Meat, Ethan Brown believes he can turn peas and lentils into protein that tastes — and feels – exactly like beef and chicken. He says they're not quite there yet, but after 8 years in business, their products are sold in 11,000 stores nationwide. Recorded live in Anaheim, CA.

Ridesharing wasn't a thing 12 years ago when John Zimmer was in college. But a class on green cities got him thinking about the glut of underused cars on the road, and eventually led him to co-found Lyft, a company that has helped make ridesharing a way of life.