I've known people who have seen a new movie or read a new book and then cursed their luck saying something like: "Oh I had that same idea why didn't I come out with it first.."

Now I know there are only a few actual original stories all based on the same general concepts or ideas, but does anyone ever feel this?

Sometimes I feel that if I don't hurry up and finish my book Hollywood or a more successful writer is going to think of a similar idea before I can come out with my own. Maybe it's silly of me to think so but I find I often think about it.