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Michael J. Fox is redefining what a diagnosis with Parkinson's disease looks like — not dwelling on the disorder that affects his nervous system.

While in Austin, Texas, at the SXSW Film & TV Festival, where he is showcasing his documentary "Still: A Michael J. Fox Movie," Fox was asked how he "mobilized" people to be passionate about the cause so close to his heart.

"I didn't have a choice… This is it. I have to give everything I have, and it's not lip service. I show up and do the best I can," he said, per People magazine.

"Pity is a benign form of abuse. I can feel sorry for myself, but I don't have time for that. There is stuff to be learned from this, so let's do that and move on," he added.

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Michael J. Fox sits in a tan chair on the SXSW stage, in a black top with white flowers and jeans, wearing black rimmed glasses

Michael J. Fox revealed that he doesn't have time to feel sorry for himself over his Parkinson's disease diagnosis. (Frazer Harrison/Getty Images for SXSW)

From director David Guggenheim, the documentary is described as highlighting "Fox’s personal and professional triumphs and travails, and will explore what happens when an incurable optimist confronts an incurable disease."

"David said early on, 'I want to cover Parkinson's, but I don't want to make a movie about Parkinson's.' He made a movie about life," Fox clarified of his director's vision. "He made a conscientious decision not to make a movie about Parkinson's."

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Fox's transparency with the disease is something he attributes to his fans,

"My fans have basically given me my life," he shared. "I wanted to give these people who have done so much for me my time and gratitude. It was great for me to hear from all of you."

David Guggenheim in a mustard shirt and brown jacket, pants, boots and frames sits on a tan chair beside Michael J. Fox in a black shirt with white flowers on it, while on stage for a Q+A at SXSW

Director David Guggenheim, left, and Michael J. Fox answer questions during a SXSW Q&A. (Frazer Harrison/Getty Images for SXSW)

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"Parkinson's sucks, but it's a great life, so thank you for it," Fox directly told Guggenheim.

Fox was diagnosed with Parkinson's disease when he was 29 years old in 1991, but only went public with his diagnosis in 1998.

In 2000, the "Back to the Future" star launched the nonprofit Michael J. Fox Foundation, which strives to find a cure for Parkinson's. The foundation has led to over a dozen clinical trials and therapeutic programs, and is a resource for those who have been previously diagnosed or are newly diagnosed.

Tracy Pollan in a green jacket looks lovingly at Michael J. Fox as he speaks into a microphone on the SXSW carpet wearing a black shirt with white flowers on it

Michael J. Fox attended the showing with his wife, Tracy Pollan. (Gary Miller/WireImage)

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In an interview with People magazine in 2020, Fox said acting had become increasingly difficult because the disease affects his speech and memory, making it hard to learn lines. 

Despite the challenges, Fox admits he lives with "no regrets" by choosing to work after learning of his diagnosis.

"You do what you have to do, but you do not want to kill yourself. And that's when I stopped," he said.