Here's how you know you're watching a movie that was adapted from a Stephen King book: a) something weird is going on; b) the people in the story don't know that weirdness is going on; and c) --and this is most important-- one of the characters, probably the main one, is a writer. Stephen King writes about writers all the time, because that's what he knows. But here's what I learned in my time of writing about writers: mostly, it's only writers who are interested. Writing about writing is all well and good, but it's even better if you don't do that at all. I'll tell you why.
On Writing...
People are always interested when they find out that I'm a writer...at first. Once they understand that writing is me sitting on my couch and staring at my screen, they realize that writing is actually pretty boring. It is tedious, hard work. And it isn't interesting. This is why you shouldn't write about writing.