Tips for using a side hustle to pay off student debt

When Kristen Heaton launched her own brand on Amazon in 2013, she had $70,000 in student debt. Almost a decade later, she's sold more than a million of her brand's signature Glide Thru Detangling Brushes and says revenue has topped $15 million. Here's her advice for how to use a side hustle to pay off student debt.