I have to disagree. I'm not a very good writer when it comes to actually writing. I have good concepts, but I have trouble translating it into an actual artistic medium. Same goes for any form of art. I can have amazingly detailed concepts or blueprints in my head, but I can't draw, build, write stories, or create music. Writing is definitely still the easiest, and it's the only one I really believe that I can become good at through practice. Anyway. No spoilers. It's a very simple idea, but to me it's very powerful. I think it'll make a good story. I will clarify that it will be a very tiny story. No more than a few paragraphs.
That's my issue too. I had an idea for a story recently, but I just can't get it all to work out on paper. Also a large part of it had to do with gods and demons, then Diablo 3 came out in the middle of my planning and it just made it seem unoriginal. The other part of it was more sci-fi though, involved aliens. I still have the ending to part 1 in my mind though. It's particularly violent, and for some reason I enjoy that.