Brittany Maynard: My right to death with dignity

Brittany Maynard with her dog Charley in San Francisco. Maynard, a 29-year-old with terminal brain cancer, has died, advocacy group Compassion and Choices said in a Facebook post on Sunday. Click through to see more photos of Maynard's life.

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Brittany Maynard's journey

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STORY HIGHLIGHTS

Married for a year, Brittany Maynard, 29, found she had aggressive brain cancer

She had six months to live, and she didn't want her family to watch her dying in pain

Maynard and her family moved to Oregon to take advantage of the Death with Dignity law

She says nobody has the right to take away the option from someone who is terminally ill

Editor's note: Brittany Maynard worked as a volunteer advocate for the nation's leading end-of-life choice organization, Compassion and Choices. She lived in Portland, Oregon, with her husband, Dan Diaz, and mother, Debbie Ziegler. Watch Brittany and her family tell her story at www.thebrittanyfund.org. The opinions expressed in this commentary are solely those of the author.

(CNN) -- On New Year's Day, after months of suffering from debilitating headaches, I learned that I had brain cancer.

I was 29 years old. I'd been married for just over a year. My husband and I were trying for a family.