Thank you. Now to the laits from valerie harper. Last week, the devastating diagnosis. We're learning me each day from her how to confront the biggest moments of life with bravery and love. I don't... See More
Thank you. Now to the laits from valerie harper. Last week, the devastating diagnosis. We're learning me each day from her how to confront the biggest moments of life with bravery and love. I don't know why I'm putting it many my mouth. I should apply to it my hips. Reporter: For years, on two UNFORGETTABLE '70s SITCOMS, THE Perfect friend, a strong woman, truthful and funny. I came to minneapolis because of cold. I figured if I was frozen, i would keep better. Reporter: Then last week, she grabbed our attention with devastating news. Hello, everyone. I'm valerie harper. I recently got an amazingly shocking diagnosis from my doctors that I had an inkrurable, very rare form of Reporter: Now with the same candor that made rhoda one of the most beloved characters in television history, she's spea out about her terminal brain cancer diagnosis for the first time to "people" magazine. A lot of you fl like you know me, are part of the morganstern family. I feel like I know you too. Reporter: Told, she may just have three months to live. She reassured her public that she's getting top quality care from her doctors and great abiding love from her husband. My houbd is ber reft. He's getting through it. I don't have side effects and pain. When the smoke clears, I'll be standing, until I'm not. I'll be ready for that, too. Reporter: Her attitude is no surprise to people that snow her. She's interested in spreading awareness of the disease. It's important that we have universal health care. Reporter: With millions offering support, she s she's facing the future head on and ever hopeful and unafraid. So -- onward. I love you. And know that I'm okay. Reporter: For "good morning america," chris connelly, abc news, los angeles.
This transcript has been automatically generated and may not be 100% accurate.