I'm debating wheter or not I'd give this the full 5 stars, but I honestly don't see a reason not to other than, I've read some bad reviews about it.
I just think that... you have to be able to empathise with Tori to enjoy the book, to understand it. Because she's real, her story is real. This is what a true form of depression looks like, one of the many forms. And I'm glad that Alice wrote her so honestly, without worrying too much about making her likeable.
You don't need to like Tori to like the book, you just need to try to understand her.
I love how we see this reflected in the other characters. I love how we see a progression and some regressions of her disorder throughout the story. I love how this is much more about Tori as her own character than as part of a relationship. And he doesn't cure her. And her family doesn't want to see what she's living, and her friends don't get it. But they all love her, and at the end they are all there for her, and that's what matters.
She's judgemental, pessimistic, awkward and rude and what-not, but she's also human and struggling and all these things reflect on her inside world. She's also caring, towards Charlie and Michael, even towards Becky and Lucas. She's curious, she's smart, she's mature and funny. She is also self-aware, and a person like any other, who is struggling with mental illness.
I loved this book. It might be a bit triggering, so I'd read it if you're in a stable mind state. It's worth it, in my opinion. It's a very true and clear depiction of depression, family, friends, loneliness and being a person.