What Happened Yesterday? Content Creator Matt Sturniolo Will Tell You
Cover of “What Happened Yesterday” by Matt Sturniolo
Photo Credit: Allison Copley
Influencer Matt Sturniolo Releases Memoir About Mental Health
Content creator Matt Sturniolo released his debut memoir, “What Happened Yesterday,” on Aug. 18, sharing his mental health journey with more than 7 million YouTube subscribers.
The memoir arrives as social media creators increasingly use their platforms to discuss personal struggles with audiences who often feel closely connected to them. For Sturniolo’s fan base, his decision to write openly about therapy, grief and growing up online may make conversations about mental health feel more accessible and less isolating.
Sturniolo is best known as one-third of the Sturniolo Triplets, a social media group formed with his brothers, Nic and Chris. The brothers began posting on YouTube in 2020, building an audience by documenting their everyday lives during the COVID-19 pandemic. Their content has shifted primarily to sharing personal experiences as triplets, candid conversations, and internet challenges.
His memoir contributes to a broader discussion of mental health stigma through accounts of Sturniolo’s experiences with therapy, family loss and internet fame. A 2025 systematic review published in Stigma and Health concluded that public mental health disclosures on social media were often associated with reduced stigma, particularly when audiences identified with the person sharing.
“If I was 11 years old and I was able to pick up a book like that of someone on the internet that I really looked at for advice … it would have changed my life, so I just want to be able to write that and hope it helps one person,” Sturniolo said on The Zach Sang Show.
Not only does Sturniolo recall the traumatic events of his childhood, but he also presents medical records documenting the psychiatric treatments he received as a young person. Researchers Petra Gronholm and Graham Thornicroft wrote that when celebrities disclose mental health struggles, they may encourage open communication and model help-seeking behavior during times of despair. The researchers cautioned that the success of this type of communication depends on how much the reader identifies with the public figure and how authentic and relevant they find the story.
According to Sturniolo, he is very comfortable with the vulnerability he poured into the book. “I talked a lot with friends and family of ‘would I be comfortable with this?’ … if I’m going to release a book, it’s going to be one hundred percent me on the page,” he said on The Zach Sang Show.
Those interested in following Sturniolo’s story can buy the book or follow him on social media (@Matthew.Sturiolo and @YesterdaysProblem) for more mental health awareness content. According to his official website, he has three in-person events to discuss the book in New York (Sept. 4), Boston (Sept. 6), and Los Angeles (Sept. 10).