At 23, Katelyn Gleason faced, like many people in their early 20s, an existential crisis. She just didn't know what she wanted to do.

"I started thinking about jobs. I was like 'God if I'm going to have to do this for the rest of my life it better be something I really care about, that can be my life's work, that I can really invest all of my time and all my energy into,'" Gleason says.

Her first step was to start reading the biographies of some of the greatest individuals in human history—Marie Curie, Jane Austen, Abraham Lincoln, anything she could get her hands on. Gleason's goal was to learn as much as she could about these great people and how they managed to leave such a large legacy and imprint on humankind today.

It wasn't long before Gleason found herself immersed in the world of healthcare, technology, and startups. It was there she found her purpose. Gleason noticed a problem in the medical industry that no one seemed to be talking about or trying to solve. Doctors and patients alike were getting bogged down with paperwork that was often confusing, and as a result, many were dealing with huge costs simply by filling out the wrong forms.

The next nine months were spent at her kitchen table, furiously working on a solution to this problem. That solution would end up becoming Eligible, a medical billing startup designed to make it as simple as possible for doctors and insurance companies to work together and save everyone money, patients, doctors, insurance companies alike.

As a two-time alumni of Y-Combinator, Gleason led Eligible from quietly testing and validating its product to becoming an explosive fast-growth company. Today, Eligible processes 14 million transactions per month, with a projected 50 million transactions by the end of the year, and has raised more than $25 million in funding.

In this week's episode you will learn: