What a year.

This year has been a transformative one, pushing us all to create something new and hopefully better for our lives. This issue reflects that spirt: Our People of the Year cover stars have all led the way in their fields to help make the world a little bit better.

People of the Year Cover Dolly parton

Dolly Parton has always done her part to help others through efforts like herImagination Library, which to date has given more than 160 million books to kids in need. Early in the pandemic she saw another way to help,donating $1 million to Vanderbilt University Medical Centerto support COVID-19 research, which resulted in the Moderna vaccine that became widely available this year.

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“It makes my heart feel good to know that I can do something for somebody else,” she says.

People of the Year Sandra Oh

At a time when levels of Anti-Asian hate crimes rose significantly, Sandra Oh stepped up and used her celebrity for good,speaking out after the spa murders in Georgia. And she continued to work on transformative stories, signing on as producer on her Netflix seriesThe Chairand other new projects that showcase perspectives and voices she believes in.

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“Progress is not just sticking a bunch of people of color [into a show] and having them speak like everyone else,” she says.“The thing that I’m most proud about withThe Chairis how it’s translated to people of color who are living and working in mostly white spaces. What I hope is that anyone who’s watching it can say, ‘That could easily be me.’ "

People of the Year Simone Biles

Simone Biles, meanwhile, redefined what it means to win in sports. At this year’s Olympics, shestood up for herselfand changed the way we think about athletes' mental health. “Now [people] view me as human, which makes me so happy,” she says. “I fought hard. I survived. I’m proud of myself.”

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PEOPLE of the year cover

And then there are our nation’s teachers, whose resilience has been unbelievably inspiring these past two years. Juliana Urtubey, National Teacher of the Year, was chosen along with finalists John Arthur, Alejandro Diasgranados and Maureen Stover to represent the 3 million-plus classroom heroes who have gone above and beyond to ensure our nation’s kids have bright opportunities ahead. Our future depends on supporting them and their work.

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And it depends on looking forward with hope once again. As Oh tells PEOPLE, “When you understand what you’ve gone through … you remember that you’ve lived.”

Read more from our People of the Year in the latest issue of PEOPLE, on newsstands Friday.

source: people.com