> Sometimes you simply no longer get anything meaningful from a genre or subject matter,

I read a ton of sci-fi in my youth, and kind of burned out on it for many years, and I'm really selective on what sci-fi I read now. It's a lot harder to find engaging works that are good.

> and sometimes it is pure random chance that you are in the right headspace to read a particular book at that moment to have it leave a meaningful impact on you.

I read a few romances (magical romance) that really resonated with me, so it's something I keep an eye out for now.