kuroku_tenshi
1) When you start to carry a miniature notebook with you Everywhere in case inspiration kicks you in the face.
2) When someone asks for a writing utensil you jump at them and ask which they would prefer: pen or pencil, what brand and/or what color.
3) When someone asks for a writing utensil you fear the loss of said implement like it's your arm and act like you've never heard of such a thing.
1) This is not a sign you are writing too much---it's admiting that you would like to remember all those cool details or plot solvers that ramdomly pop up in your head, but you don't have the memory for it.
2) Been there, done that. Pick a color, any color!
3) This is also a problem I have.
redface
You also know your gettin' really into your story when you read a book and keep expecting your own characters to show up. (I'm battling this problem at the moment, in fact)
And when you're telling you friends one of those 'guess what happened the other day' stories, and you start telling about a char. from you story. (Yes, I have done this as well, and it was quite embarrassing, particulartly since I was talking to my friend who knew of some of the characters and how obsessed with writing I am
redface