This two-part article from The Guardian (UK) isn’t new, but it’s worth another read even if you saw it when it was first published. Writers including Elmore Leonard, Margaret Atwood, Philip Pullman, Jonathan Franzen, Anne Enright, Hillary Mantel, Zadie Smith, and many more offer their personal rules for writing fiction. A few that are repeated throughout many lists include “take long walks,” “avoid adverbs,” and (seems obvious, but…) “write.” Many encourage habit and routine; many also admit it’s fine to break the rules sometimes. Whether you’re a writer or a reader, the lists are fascinating.
Jenny Arch 
I don’t believe anyone here but Gaiman and maybe Oates, however. I like that some writers are against writing lists!