UPDATE: Valerie Harper Makes Peace with Her Recent Cancer Diagnosis

Valerie Harper is not letting brain cancer, even a rare form, keep her down.

The "The Mary Tyler Moore Show" star is feeling good and glowing while out promoting Lung Force, an organization that unites women to stand against lung cancer and promote lung health.

Harper beat lung cancer in 2009, but was diagnosed with a rare, terminal form of brain cancer in 2013.

The 75 year-old actress told PEOPLE that, "Sometimes I feel icky, but I'm feeling very good in New York," she said. "Maybe because I'm working or I'm talking about cancer in a positive way - I think that might have something to do with it."

To see her full interview with PEOPLE, click here.

Harper is best known to audiences for her role as the beloved Rhoda Morgenstern on the classic TV sitcom "The Mary Tyler Moore Show" and its subsequent spin-off, "Rhoda." The popularity of the show was enormous, and the episode of Rhoda's wedding set ratings records with 52 million viewers.

For playing Rhoda, Harper won a total of four Emmy Awards and a Golden Globe. Her extensive television career includes the self titled sitcom, "Valerie," and more recently guest roles on such hit shows as "Desperate Housewives," "Sex and the City," "That '70s Show," "Touched by an Angel" and "Hot in Cleveland." Notable film credits include "Blame It on Rio," "Freebie and the Bean," "Chapter Two" and "The Last Married Couple in America."

In 2010 Harper was seen on Broadway in "Looped" and received a Tony Award nomination for her portrayal of legendary actress Tallulah Bankhead. In January 2013, Harper published her memoir, I Rhoda.

Photo Credit: Walter McBride