New York Giants receiver Brandon Marshall send a message to himself as part of the Child Mind Institute’s #MyYoungerself campaign.

New York Giants wide receiver Brandon Marshall had issues off the field long before he began his football career. He has been fighting with mental illness since he was a child.

Marshall was diagnosed with multiple personality disorder in 2011 and subsequently underwent three months of treatment at McLean Hospital in Belmont, Massachusetts. He is now an advocate for others who are dealing with mental illnesses. He has also created Project 375 to support the cause.

On Friday the Pro Bowl receiver sent a message to his younger self as part of the Child Mind Institute’s month-long #MyYoungerself social media campaign.

“What I would say to my younger self is, ‘Don’t let the diagnosis define who I am,’ “ he says in the video. “I would also say to myself that it’s extremely important that I be brave and strong and fearless in talking to others. Whether that’s my mom and dad, or a professional, a doctor, a clinician – it’s extremely important that every time something comes up that I reach out to someone and let someone in no matter how hard it is to express those feelings of what’s going on in me.”

The Giants receiver isn’t the only celebrity that’s participating in the Mental Health Awareness Month videos. Olympic swimmer Michael Phelps, actor Jesse Eisenberg, actresses Emma Stone and Lena Dunham, and fashion designer Tommy Hilfiger have also sent messages to themselves, according to Jordan Raanan of ESPN.

Good job Brandon. Keep up the good work.