I only took off half a star because I think that the pace was a little too fast and we didn't have enough time to see Tori develop, and because the whole Solitaire thing didn't really make sense to me honestly. Maybe I just need more time to process the book since I was very tired when I read it.

Overall, I think it's a really good depiction of depression and just generally how a lot of teenagers nowadays feel. Personally, I related it to it a lot. Also, as someone who has read Catcher in the Rye and found it annoying and pointless, there are some similarities (age, disdain towards school and a certain kind of media, seeing everyone as fake, etc) but I think they're more surface level and this book is a lot more relevant nowadays and generally less pretentious; the points are clear and compelling. 
I already loved Tori just from reading the Heartstopper comics, and getting to be inside her head the way this book is was a very interesting experience. I like her and I see a bit of myself in her, as I've always considered myself a bit of a habitual pessimist, so seeing her character arc had an impact on me. It just wasn't as big of an impact as I would've liked. 

Also, one thing that I really appreciate about this book was it’s depiction of OCD. I think I’ve read a decent amount of books, by no means even scratching the surface of them all but still, and I’ve never even heard of a book that had representation of OCD. I’m personally not diagnosed with it, but I found the scenes with Charlie very moving and true to the experiences I’ve heard from people who are diagnosed with OCD.