“Self-help” books
I have an odd guilty pleasure: the so-called “self-help” books. I know that, more often than not, they are just commercial operations, but I like reading them for multiple reasons: to decode the distinctive style of an author, to understand what kind of writing and what topics capture the audience and sell, and sometimes even to pick up some good ideas.
Self-improvement is something that I've always been trying to practice, and no, I do not expect to turn my life around with a self-help book. Nevertheless, I always like picking up chances to reflect, and these books give me a lot of material to think about, even though such material is trite or generic. Sometimes, just a change of perspective can work wonders.