There's an interesting piece by Guy Gavriel Kay regarding writer's advice on brightweavings.com. Here's a teaser:
I did a tweet yesterday morning that seems to have triggered an enthused response from a lot of people: “My Saturday morning writer’s advice for writers: try not to get hung up on writers’ advice for writers.” I was being cute with the phrasing but am really serious about the point. It sometimes seems to me that next to Top Ten Lists, the internet breeds writer-advice more furiously than almost anything else. (Well, maybe cat pictures. Or Benedict Cumberbatch photos. Or … fine. We’ll leave it there.)
The creative process is deeply and profoundly individual. That applies to the Nobel laureate and the undergraduate poet and the person keeping a journal of his or her dreams and desires.
There is so much variation to the writing process, it feels wrong to be prescriptive – from where I sit. If my arm is twisted (hard) to solicit advice I’ll urge writers to travel if their life allows it, because travel does important things to us as people, and that affects us as writers. I try to steer younger writers to read outside their comfort zone, their favourite genres and styles, because we get stretched as people by doing that. But I try hard not to get drawn into technical advice.