Also from Austin Kleon:

The question every young writer asks is: “What should I write?”

And the cliched answer is, “Write what you know.”

This advice always leads to terrible stories in which nothing interesting happens.

The best advice is not to write what you know, it’s write what you like.

Write the kind of story you like best.

We make art because we like art.

All fiction, in fact, is fan fiction.

By the same token, don’t denigrate someone’s work simply because it falls into a recognizable genre. What matters isn’t ‘literariness,’ but content and heart.