Interesting that some of the 10 Rules for Writing offered by some of the authors in The Guardian tell you rather about those writers themselves.
Anne Enright's first rule, for instance: The first twelve years are the worst. Hm, obvious she's never been a mid-list author out on her ear.
Hilary Mantel's very first rule: Get an accountant. For god's sake, has she never been at the writing stage where you can't f***ing afford an accountant?
Interesting how conflicting the advice is, Atwood and others saying it's no use plodding on if something's going stale, someone (can't remember who) saying stick at it.
All relative, innit? And perhaps it's not surprising that it's the writers I like best with whom I mostly agree: Atwood, Enright (in spite of her opener), AL Kennedy, Joyce Carol Oates among others.