Tracy Sun may be at the helm of the impressive fashion-tech startup Poshmark, but she doesn't consider herself a "fashion person." She studied biology and psychology in college with the intention of pursuing a career in neuroscience. Little did she know that she would trade medical school for business school and leave behind New York City for the tech mecca that is Silicon Valley. Sun explains how she made the transition from science to startup in episode 12 of Second Life.

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Having a successful career might seem like the goal for many actors, but for Jessica Alba, it was a foundation to try something entirely new: building a business. The founder of The Honest Company shares the most powerful lessons she’s learned along the way, including letting go of ego, recruiting the right people, and the most important quality you can possess.

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Few people would consider dropping out of college at age 19 to be a pivotal first step toward an impressive career, but that's exactly what Raina Penchansky did. Now co-founder and CEO of digital talent management company Digital Brand Architects (BDA), Penchansky left college during her sophomore year and began building a wildly impressive career in public relations. She explains how her natural instincts for hustling and winging it catapulted her PR career and gave her the courage to launch her own startup in episode 10 of Second Life.

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Making the decision to change careers isn't always clear-cut, but holistic nutritionist Kelly LeVeque can pinpoint the moment she realized she was on the wrong path. In episode nine, LeVeque talks about her leap from pharmaceutical sales to nutrition as well as the advice to heed if you’re thinking of starting a business.

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