Bestselling author Susan Cain wasn't always a writer. In fact, she was a practicing lawyer until an epiphany moment set her on a different path.
She explains her journey in the video above, a clip from the upcoming documentary MAKERS, which takes a look at some of the most pioneering women in history.
Cain, who wrote Quiet: The Power of Introverts in a World That Can't Stop Talking, compares introverts today to women of the 1950s and 1960s, who were "discounted because of a trait that goes to the core of who they are."
Instead of feeling like we must overcome introversion, she says, we should aim to understand and value it, especially since so many "transformative leaders in history" like Rosa Parks, Eleanor Roosevelt and Gandhi were introverts, she says.
Cain says she was a shy child herself and wasn't always so forthcoming with her ideas; she didn't even expect to make writing into much more than a hobby. Find out what changed her mind in the video above, and tune in for the entire MAKERS film on Feb. 26 at 8 p.m. ET on PBS.