Cameron Boyce's sister pens heartbreaking note recalling the 'hours before he died'

Cameron Boyce's sister, Maya, is opening up about his heartbreaking death

In a touching tribute to her brother on Thursday, 17-year-old Maya opened up Cameron's last hours alive. The 20-year-old Disney Channel star died of a seizure in his sleep on Saturday. His family later told ET that he suffered from epilepsy. 

"Yes, he died. Yes, I'm sad," Maya began her post, which was accompanied by several images of Cameron through the years. "Cameron was my best friend. He is someone I will always idolize. His smile could light up a room, unlike anyone else's. He was perfect. He always said that if you have a voice, you have the privilege of using that voice for change, and he did not take that idea lightly. He understood his responsibility as someone so many kids would look up to."

18 PHOTOS
Cameron Boyce through the years
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Cameron Boyce through the years
CULVER CITY, CA - DECEMBER 09: Cameron Boyce star of the hit series "Jessie" gets signs autographs for Radio Disney AM 1110 fans at the Wii U Showdown at Westfield Century City Mall in Los Angeles on December 9, 2012. Wii U is one of Nintendo’s hottest items of the holiday season. (Photo by Michael Buckner/Getty Images for Nintendo of America)
DESCENDANTS - Disney Channel's original movie "Descendants" stars Booboo Stewart as Jay, Dove Cameron as Mal, Sofia Carson as Evie and Cameron Boyce as Carlos. (Photo by Eike Schroter/Disney Channel via Getty Images)
LOS ANGELES, CA - NOVEMBER 25: Actor Cameron Boyce attends the 2012 Hollywood Christmas Parade Benefiting Marine Toys For Tots on November 25, 2012 in Los Angeles, California. (Photo by Vincent Sandoval/FilmMagic)
JESSIE - "Karate Kid-tastrophe" - Jessie finds herself in unfamiliar territory when Emma's unexpected behavior gets her into trouble at school. Meanwhile, Luke takes on the role of Sensei to train Zuri for her upcoming karate belt test. This episode of "Jessie" airs Friday, March 27 (8:00 PM - 8:30 PM ET/PT), on Disney Channel. (Kelsey McNeal/DISNEY CHANNEL via Getty Images)
LOS ANGELES, CA - FEBRUARY 28: Cameron Boyce attends the 15th Annual Global Green Pre Oscar Party at NeueHouse Hollywood on February 28, 2018 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images for Global Green and EIN )
GAMER'S GUIDE TO PRETTY MUCH EVERYTHING - "The Longest Yard" - Conor and Ashley give Mr. Spanks another chance at breaking the school's punting record in football while Wendell and Franklin compete to become the next school mascot. This episode of "Gamer's Guide to Pretty Much Everything" will air Wednesday, December 2 (8:30 PM - 9:00 PM ET/PT), on Disney XD. (Photo by Ron Tom/Disney XD via Getty Images)
HOLLYWOOD, CA - MARCH 13: Cameron Boyce attends A Legacy Of Changing Lives Presented By The Fulfillment Fund at The Ray Dolby Ballroom at Hollywood & Highland Center on March 13, 2018 in Hollywood, California. (Photo by Tommaso Boddi/WireImage)
STUDIO CITY, CALIFORNIA - JUNE 16: Actor Cameron Boyce attends the 2019 Radio Disney Music Awards at CBS Studios - Radford on June 16, 2019 in Studio City, California. (Photo by Paul Archuleta/FilmMagic,)
STUDIO CITY, CALIFORNIA - JUNE 16: Cameron Boyce attends the 2019 Radio Disney Music Awards at CBS Studios - Radford on June 16, 2019 in Studio City, California. (Photo by Rodin Eckenroth/Getty Images)
WEST HOLLYWOOD, CALIFORNIA - APRIL 25: Cameron Boyce attends LA Family Housing Annual LAFH Awards And Fundraiser Celebration at The Lot on April 25, 2019 in West Hollywood, California. (Photo by Jon Kopaloff/Getty Images,)
INGLEWOOD, CALIFORNIA - APRIL 25: Cameron Boyce attends WE Day California at The Forum on April 25, 2019 in Inglewood, California. (Photo by Tommaso Boddi/Getty Images for WE Day)
NEW YORK, NY - MARCH 26: Former Vice President of the United States, Joe Biden (L) and actor Cameron Boyce attend The 2019 Biden Courage Awards at Russian Tea Room on March 26, 2019 in New York City. (Photo by Cindy Ord/Getty Images for It's On Us)
LOS ANGELES, CA - September 24: (EXCLUSIVE COVERAGE) Cameron Boyce visits the Young Hollywood Studio on September 24, 2018 in Los Angeles, California. (Photo by David Mendez/Young Hollywood/Getty Images)
WEST HOLLYWOOD, CA - AUGUST 28: Cameron Boyce attends Variety's Power of Young Hollywood event at the Sunset Tower Hotel on August 28, 2018 in West Hollywood, California. (Photo by Jesse Grant/WireImage)
BEVERLY HILLS, CA - APRIL 21: CEO and Co-Founder of The Thirst Project Seth Maxwell and Cameron Boyce attend The Thirst Project's 9th Annual Thirst Gala at The Beverly Hills Hotel on April 21, 2018 in Beverly Hills, California. (Photo by John Sciulli/Getty Images for Thirst Project)
BEVERLY HILLS, CA - APRIL 21: Cameron Boyce attends The Thirst Project's 9th Annual Thirst Gala at The Beverly Hills Hotel on April 21, 2018 in Beverly Hills, California. (Photo by John Sciulli/Getty Images for Thirst Project)
WEST HOLLYWOOD, CA - APRIL 05: Actor Cameron Boyce arrives at the 2018 LA Family Housing Awards at The Lot in West Hollywood on April 5, 2018 in West Hollywood, California. (Photo by Amanda Edwards/WireImage)
HOLLYWOOD, CA - DECEMBER 14: Actor Cameron Boyce arrives at the premiere of Walt Disney Pictures' and Lucasfilm's "Star Wars: The Force Awakens" at the Dolby Theatre, TCL Chinese Theatre and El Capitan Theatre on December 14, 2015 in Hollywood, California. (Photo by Steve Granitz/WireImage)
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"Cameron always went out of his way to be giving and kind. He did more with his 20 years of life, than most people ever could with 100 years. He was actively charitable. He traveled the world. He made creativity and art his life's mission, and he encouraged others to do the same," she added. 

Maya continued, explaining that she'll be devastated "for the rest of my life." "But what I'm holding onto, and what I encourage you to hold onto as well, is the memory of his endless optimism," she suggested. "He was sunlight wearing shoes." 

"I can confidently say, he wants us to celebrate, grow, and persevere. Yes, he died. Yes, I'm sad. I'm also happy. And grateful. I was with him hours before he died. It was normal and fun. We said, 'I love you.' He was happy," Maya concluded. "I spent 17 years knowing what it was like to be loved by Cameron Boyce. That is the most beautiful gift I have ever received."

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Also on Thursday, Disney Channel announced that it had canceled the premiere of Cameron's upcoming movie, Descendants 3. The event was previously planned for July 22, but canceled in the wake of his death.

Instead, the Walt Disney Company will make a donation to the Thirst Project, a philanthropic organization to which Cameron was deeply committed. Disney Channel, with permission from the Boyce family, will also dedicate the telecast of Descendants 3 next month in the actor's memory.

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'Descendants 3' Premiere Canceled: How Disney Channel Is Honoring Cameron Boyce's Death

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