I quit my full-time job during COVID-19 to start my own media company. Here are 10 things I've learned, and my advice to fellow entrepreneurs.

Polina Marikova Polina Marinova is the founder and author ofThe Profile, a newsletter that features interesting longform profiles on successful people and companies. Marinova started The Profile in 2017 while working as an editor and writer at Fortune Magazine. At the start of COVID-19 pandemic, she decided to quit her job and begin working on The Profile full-time. After three months, Marinova says she's learned it's important to diversify your revenue as a new entrepreneur, be consistent with ...