Shannen Doherty is ready to beat cancer once again.

On Tuesday morning's Good Morning America, the actress shared a difficult health update for her fans and followers.

"It's going to come out in a matter of days or a week that I have stage 4," she revealed on the morning show. "My cancer came back and that's why I'm here."

In 2015, Shannen revealed that she had been diagnosed with breast cancer. But in April 2017, the actress announced that she was in remission.

"We only live once, Snoopy," a photo on Shannen's Instagram read after the news was revealed today. "Wrong! We only die once. We live every day!"

According to the BH90210 star, she has been privately battling the disease for more than a year while filming the popular reboot. "It's a hard one because I thought when I finally do come out I would have worked 16 hours a day and people can look at that and say, 'Oh my God, she can work and other people with stage 4 can work,'" Shannen continued. "Our life doesn't end the minute we get that diagnosis. We still have some living to do."

As the actress prepares for battle, we're taking a look below at a few more breast cancer survivors who have overcome a difficult diagnosis. Perhaps the words of others will inspire Shannen and others battling similar health obstacles to never give up.

Hoda Kotb, 2018 Emmys, 2018 Emmy Awards, Red Carpet Fashions

Frazer Harrison/Getty Images

Wanda Sykes, 2019 Creative Arts Emmy Awards

Chelsea Lauren/Shutterstock

Giuliana Rancic, 2019 Grammys, 2019 Grammy Awards, Red Carpet Fashions

Steve Granitz/WireImage

Shannen Doherty, Baby2Baby Gala

Charley Gallay/Getty Images for Baby2Baby

Tribeca Film Festival, Christina Applegate

Monica Schipper/Getty Images for Tribeca Film Festival

Rita Wilson, 2015 Tony Awards

Dimitrios Kambouris/Getty Images for Tony Awards Productions

Kylie Minogue, 2019 GQ Men of the Year Awards

Matt Crossick/PA Wire

Kathy Bates, 2016 Emmy Awards, Arrivals

Alberto E. Rodriguez/Getty Images

Sheryl Crow, ACM Awards 2014, Christian Siriano

Jason Merritt/Getty Images

Julia Louis-Dreyfus, Women Who Made History in Hollywood

Kevin Mazur/WireImage

Olivia Newton-John, 2016 CMA Awards

Michael Loccisano/Getty Images

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