The star, 59, recently came across diaries she kept while shooting the 1977 movie, and she's planning to turn them into a new book about her time on the set, reported Contactmusic.
"(I was) 19 years old (when I was filming). It was very calming for me... I confided with my hand to paper," she said.
Fisher is reprising her role as Princess Leia in the hotly anticipated "Star Wars: Episode VII - The Force Awakens", but she admits her return to the franchise hasn't been without controversy.
"Nothing changes, it's an appearance-driven thing. I'm in a business where the only thing that matters is weight and appearance. That is so messed up. They might as well say, 'Get younger', because that's how easy it is.