Stephen Chbosky adapted his beloved novel, "The Perks of Being a Wallflower," to the screen in 2012. That was 13 years after the book debuted.
Fans fell in love all over again with the coming-of-age tale of shy teenager Charlie, while new viewers empathized quickly. Chbosky's challenge was to faithfully preserve the boy's story without reciting the book triumph for triumph, humiliation for humiliation.
"I think that the process of turning 'Perks' into a movie was the most gratifying and challenging work I've ever done professionally," he said. "I had to do a real adaptation -- I couldn't just film the book. It was a real balancing act to simultaneously be emotionally very inside the piece and at the same time always be outside of it to keep it on the train tracks."
He wrote a version of the screenplay including almost every detail of the book. It gave Chbosky a chance to self-edit, cutting back on small details or scenes that didn't focus on central characters.
Chbosky wanted to maintain the audience of his readers, both from 1999 and now, bringing teens and parents together around issues that kids of all generations face.
It's something that YA film adaptations continue to do, and Chbosky is hopeful that Forman's upcoming film will have a similar impact: "I do believe that these books and these movies can change lives."