Being a writer does not mean you're obligated to think about it 24/7. It's healthy to have other hobbies, because doing something else helps rechange your batteries. I know exactely what you're going through, as I've been there before. And trust me: you are a writer. You may not always think so, but if it starts to feel like a leech that won't let go, you think about it so much that you sometimes get sick about it and you're convinced that REAL writers do so-and-so (and thus, you are either weird or a fake), you're a writer.
You have already written thousands of stories: you just need to get them on paper. And the best way to coax them out of your mind, is to start writing. By putting your creative outbursts on paper, you're freeing up new space for new ideas. Writing down one briliant quote will spark three more. Those will spark a new chapter, those will spark even more chapters and a subplot or two. And suddenly, you look at your work and think: "hey, that's beginning to look like a book!"
Also remember: books are like dough: you need to beat the crap out of it before it starts resembling something that will not make you throw up on your own shoes. Your first draft, no exeption, will
SUCK. It will suck
ROYALLY. It will make you want to gough your eyes out and jump off a building. Master the art of re-writing and fame & fortune will be yours... or something like that.
