The Casual Vacancy
I forced myself to finish it at the time, but I hated every single moment. They were all bad people and I had zero sympathy for any of the kids or adults, except for the one girl who died at the end. Obligatory Rowling can jump off a cliff too.
Biggest thing I had to learn is when to withdraw from a class, ask the professor for more time very far in advance, and accept that you sometimes fail and need to retake it.