The Princess Diarist by Carrie Fisher.
I’ve enjoyed all of Fisher’s books, especially her autobiographies Wishful Drinking and Shockaholic. Compared to those two, Diarist may be the most lucid. Because rather than a collection of stories told in a stream-of-consciousness style, this is a more conventionally written narrative of her Star Wars: A New Hope years, reflecting on who she was and her relationships back then. It’s as intimate, engaging, funny, and honest as her other memoirs. The primary focus is on her relationship with Ford, but I don’t want to comment on the details as that would spoil the book. Reading it, near the anniversary of her passing last year, is kind of a melancholic experience. To say the least.
Also, I highly recommend the audiobook versions of any of Fisher’s books. She narrated all of them herself.