- Maybe plots featuring artists, crazy people, and psychiatrists are not all that uncommon. It's a pretty typical move, relating artistic ability with madness, isn't it? Not that either of the aforementioned books does that, really - but I bet there's a reason each author chose to make the person with the mental health problems an artist and not, say, an accountant.
- Even though in this case the similarities are pretty big, I've had it happen before that books I read consecutively share certain things with each other. For example, I read The Adventures of Kavalier and Clay right before I read The Book Thief and both focus a lot on World War 2. I think this is either because I am subconsciously choosing similar books to follow each other, so as not to break a mood, or because I am more attuned to similarities, and would therefore find something related in any two books I read. Or perhaps it's magic.
And that's all, because I have a fever and I'm going to bed. I was going to start reading my newest purchase, Carrion Comfort by Dan Simmons, but the cover alone scares me, and I want nice dreams while I sleep. So instead I'm re-reading A Walk in the Woods by Bill Bryson.