In the interview, she also discussed being ill while filming the Divergent series.
"I was very, very sick in my early 20s. While I was doing the Divergent movies and working hard, I also was struggling with a deeply personal, very scary physical situation."
As a result, Shailene had to pass up a lot of career opportunities. "I was in a place where I had no choice but to just surrender and let go of my career," she continued. "It brought out this negative voice in my mind that kept spinning for years and years afterward."
Shailene didn't specify exactly what her situation was, but said that she will talk about it "one day."
Thankfully, Shailene is doing a lot better these days: "Now I’m on the other side of it, thank God."
For the past few years, Shailene has been focusing on her mental health. "Because of that work, I feel very grounded and rooted in who I am and very clear about everything in my life, whether it’s my career or my relationships or my own internal worth."