In 1981, engineer Rod Canion left Texas Instruments and co-founded Compaq, which created the first IBM-compatible personal computer. This opened the door to an entire industry of PCs that could run the same software. PLUS in our postscript "How You Built That," how frustrated renter Melanie Colón created an easier way to communicate with noisy neighbors, called Apt App.

In 1978, college drop-out John Mackey scraped together $45,000 to open his first health food store, "Safer Way." A few years later he co-founded Whole Foods Market — and launched an organic food revolution that helped change the way Americans shop. PLUS in our postscript "How You Built That," how Kyle Ewing created waterproof paper through his company TerraSlate.

As a kid, Troy Carter dreamed of being a rapper, but soon discovered he was a better manager than a musician. He took Lady Gaga from obscurity to stardom – helping shape both her music and her brand. Then he turned his gift for spotting talent to spotting investment opportunities with his company Atom Factory.

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."

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.

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.