Tracy Sun is an expert at making big changes in her career. She started off as a neuroscience researcher. Casual. But then she decided to follow her passion for fashion and business. Throughout her career, she’s helped start – and grow – several companies. Today, she’s the founder and Senior VP of New Markets at Poshmark, the platform that helps 40 million people buy and sell their clothes and accessories online. One of us is a superfan. On the couch, Tracy talks to us about finding a cofounder, managing a team through the failure of her first business, and not being afraid of the things she doesn’t know.

PS: What we’re reading this week: NBC correspondent Jean Chatzky’s new book, “Women with Money: The Judgment-Free Guide to Creating the Joyful, Less Stressed, Purposeful (and, Yes, Rich) Life You Deserve.” Get it here.

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