Probably off on something of a tangent to the OP's topic, but perhaps expanding what one is inclined to read reaps greater rewards in the context of non-fiction.
Here is a rule I would strongly encourage you to adopt if you are trying to expand your reading: You don’t have to finish anything. Life is too short for a book you aren’t enjoying. A lot of people feel like they have to keep slogging through something that isn’t working for them—I know, I feel it too—but it’s really, really okay to give yourself permission to put something down. Knowing that you aren’t committing to the whole thing might free you up to try something that’s new to you.
Personally though, I am trying to take myself out of my comfort zone in respect to reading. I'd like to start reading more fantasy and science fiction for example as I've read so few and I'm sure I'm missing out on many gems as a result.