Billie Jean King won 39 Grand Slam titles to become one of the greatest tennis players in history. While writing her name in the record books, she also changed women’s professional sports as an early pioneer of gender equality and equal rights for the LGBTQ community.

Anyone else who's accomplished so much might consider resting on their laurels by the time their 80s roll around. Not King. At 81, she keeps up a nonstop schedule traveling with her wife, Ilana Kloss, and investing in the relationships and causes that matter to her. King's even gone back to school to finish her undergraduate degree, a dream deferred that represents a lifelong goal.

And in a new campaign for Lyft Silver , a feature designed to make the ride-share service easier for older adults to use, she's promoting the

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