I absolutely loved this book. Few things to keep in mind: The book does mention abuse(sexual, emotional manipulation) and depression/derealization. So, if any of those things trigger you, it's your choice. I don't think it would be easy for her to write about it honestly. The book is not supposed to fix someone's pain - but I felt like it helps you in the process of moving on with life and that is really important. A confrontation of sorts.
I think it's a brilliant book - filled with tips and it gives context to a lot of the songs she released. I think it's an amazing step for her to be open about a lot of her struggles. If you are going through something, it does help to know that you aren't alone. 10/10 I do recommend.