I grew up in the 80s and was too young to have watched "The Partridge Family" or listened to David Cassidy's music (the show never got rerun in my area, as opposed to its 70s contemporary, "The Brady Bunch"), but I of course had heard of him and found him to be funny and articulate in the interviews I saw of him on YouTube, so I decided to read his memoir, "C'Mon Get Happy...Fear and Loathing on the Partridge Family Bus", released in 1994. I found it an interesting and seemingly honest read, and then discovered he'd released a second memoir, "Could It Be Forever? My Story", in 2007, so I gave it a read as well.
After reading both books back-to-back, I can confidently say that his second memoir is essentially an updated, revised, and expanded version of his first book. Many passages from his first book are reprinted here verbatim such as the entire first chapter, describing his poor relationship with his father, actor Jack Cassidy, whom he describes as an absentee father and an alcoholic. Their broken relationship is a constant theme throughout the book, and seemingly a big reason he struggled emotionally throughout his life.
I did notice at least a few passages in his original memoir were not included in this book, most notably the story of his extremely awkward sexual encounter with Susan Dey after "The Patridge Family" had just ended (his original memoir noted in the afterword that Dey ended their friendship after he released that book, probably because of including that story, so I'm not surprised it was excised here).
In addition to repeating a lot of the original memoir, stories here are frequently augmented with new commentary from people who witnessed or were part of the events he describes, such as industry insiders, his friends and family, and musicians he played and performed with (in his first memoir, only Shirley Jones and a few others are occasionally quoted).
This book also adds more stories and details that didn't exist in his prior book, such as his meetings with Elvis and John Lennon, detailed descriptions of working on his solo albums, and greater detail on his three marriages. And, of course, the last few chapters cover the time period between books (1994-2007).
The overall story of both memoirs is essentially the same. Growing up being rebellious and experimenting with drugs, a fractured relationship with his father, becoming a megastar almost by chance and enjoying a privileged but isolating and non-stop few years as a teen idol, and then spending the rest of his life grappling with who and what it all means.
In both books he ends on a high note, happy and healthy with his third wife and son (just a baby in his first book, a teenager when this book was published). In his original memoir he was still attempting a career comeback (and was one of the primary reasons he wrote it), but in this book he says his subsequent endeavors on Broadway and in Las Vegas have made him wealthy again.
After reading all this and then looking up his Wikipedia entry, all I could think was, "what happened?". Because his life seemingly fell apart soon afterwards. He had multiple DUI arrests in the 2010s, divorced his third wife in 2014, and filed for bankruptcy in 2015. In 2017, shortly before his death due to liver and kidney failure, it came out that he had been badly abusing alcohol for many years to the point where he thought he had dementia, even though in both memoirs he claims to barely drink. Either he lied then, or he badly relapsed shortly after this book was released.
It just goes to show that any time you read a memoir, you need to keep in mind that the author is a) recalling events from only their perspective, which is subject to bias, embellishment, and the fallibility of memory, b) only discussing topics that they care to discuss, so it cannot be seen as a comprehensive recounting of their life.
Still, a very fascinating story, and one well worth reading.