Michael Dell founded his $90 billion company—once the largest PC maker—as a 19-year-old in his college dorm. Here’s his secret to making it big

Some of the most successful tech companies in U.S. history started from humble beginnings. Former Apple CEO Steve Jobs built the tech giant’s first computer model in a garage—and Dell’s founder started his $90 billion legacy from his dorm room. Another thing they have in common—they were both college dropouts.

While many businesses have modest beginnings, Dell says risk-taking focused his mind.

“If you want to really make it big, you better come up with something unique,” Michael Dell, the founder, chairman, and CEO of Dell Technologies, told Fortune in a 2017 interview. “It better be differentiated—that nobody else is doing.”

His other piece of advice for entrepreneurs is to take feedback with a grain of salt. Instead, he says, he empowers people to trust their gut instincts on whether