I realize this is probably not what you meant when asking for book suggestions on HN, but since you didn't specify: If you're into 2D action / sci-fi / dystopian fiction (or to be honest, if you're into fantasy/sci-fi at all) check out the Red Rising trilogy by Pierce Brown.

I went in expecting nothing and almost abandoned half way through the first book as it seemed like a Hunger Games / Divergent rip off (and I didn't even like either of those particularly), but holy crap after about half way into the first book I was hooked. I powered through all three in a week and a half. The books are pure fun. Didn't make me think too much, and had plenty of action, politics, twists, broken friendships, violence, sex, rape, torture, etc. Not exactly YA I would say, but then again the material isn't exactly complicated either.

All in all, if you need a break from serious reads and enjoy sci-fi / fantasy, check this out. The books were absolutely written to be made into a movie trilogy at some point and I can't wait for it.