Emma StoneEmma Stone just released a video where she talks about how severe her anxiety was as a child: She never thought she could leave home or have a normal life.

"I truly, as a kid, did not think I would ever be able to move away from home or be apart from people I had separation anxiety with," she says in the video. "It has always been something that I've lived with and it flares up in big ways at different times in my life. Sometimes while it's happening, like while I'm in a phase of big turmoil, it feels like it's never gonna end — but it does."

The video is part of a campaign from the Child Mind Institute, which gets famous people to talk about their own struggles with metal illness and learning disorders. According to Dr. Harold S. Koplewicz, who's heading the institute's campaign Speak Up for Kids, 17 million kids in the U.S. have a mental health or learning disorder.

"One of the things that change people's minds about this is when we decrease stigma ... And now I think it's time for us to recognize how real, common and treatable these diseases are," he tells People, citing how important it is for kids to know they're not alone.

Michael Phelps and Jesse Eisenberg have also shared videos for the Speak Up For Kids campaign, which launches in May.

Stone, who just won an Oscar for "La La Land," thanks her "great therapist" and the coping strategies she's learned over the years to let her live "a pretty normal and exciting and vibrant life."