It's possible that's more due to the HN audience, which probably trends toward people who want to better themselves. I also imagine that self-help books are mor

It's possible that's more due to the HN audience, which probably trends toward people who want to better themselves. I also imagine that self-help books are more universal (who doesn't want to Make Friends And Influence People?), whereas people can be judgmental about their Harry Potter/Narnia fanfic. :)