To avoid writing, I read about how to write.
It works every time.
My current Tool of Procrastination is Elizabeth George's terrific how-to book, Write Away.
Per Ms. George: "I've long believed that there are two distinct but equally important halves to the writing process: One of these is related to art; the other is related to craft. Obviously, art cannot be taught....But it's ludicrous to suggest and short-sighted to believe that the fundamentals of fiction can't be taught."
I find that my writing benefits from taking some refresher courses from time to time - rereading those writing how-to books I love - studying character development and dialogue and even that simple little motto: show, don't tell.
Then I come back to my stories a lot freer to enjoy the art of writing.
"The art of writing is what you get to do once you become familiar with the craft."