Inspiration has Struck!

I was working away on my post for the day when my concentration slipped for a moment and a new story idea burst into my brain.  So my attention shifted and I’ve spent the better part of the day jotting down notes about settings, characters, plot, etc. I don’t know where the story is going to go or if it will be a short story or an attempt at a book, but for now feeling this rush of excitement my new idea has brought is intoxicating and exhilarating. My brain doesn’t feel big enough to contain all the ideas exploding outwards and I can’t seem get them out of my head and onto paper fast enough.  I’m not sure how other people’s creative process works but I’m already finding myself exploring ways to make this story different from similar stories. Do other writers out there start out this way, concerned over how to make your story unique, or is it something that comes later in the process?