… when you are halfway through getting a meal (or doing anything really) and have to stop because this scene just popped into your head and it has to be written right the hell now. At least in rough form because the dialogue is good and you can see the faces, feel the emotions and while the picture is clear and not fuzzy, it needs to be recorded.

… when you have a picture in your mind and you aren’t sure whether it’s an actual scene you saw on the TV, or just something you imagined yourself.

… when watching TV often has no appeal anymore, because there is nothing that compares to the TV in your mind, of your own stories and ideas.

… when you can’t sleep at night because you want to be writing, but when you go to write, you just want to sleep.

I’ll stop for now. Anyone got any others?