Actress Jennifer Garner just took her $724 million organic food empire public. She started her career making just $150 weekly as a ‘broke’ understudy

Even the world’s most successful people had to get their foot in the door somehow—billionaire Warren Buffett got his start selling Coke bottles door-to-door. Jeff Bezos once flipped burgers at McDonald’s. And award-winning actress Jennifer Garner, whose organic food brand, Once Upon a Farm, just went public at a $724 million valuation, had a similarly humble start: At a low-paying New York theater, she earned just $150 a week as an understudy. 

“I just realized that I liked drama … At the time...