I have an idea!
I say this a lot though. I have lots of ideas for stories.I get them on a regular basis from dreams, inspired by others writing/art/etc, thoughts to get rid of the boredom at work, music and just at random while driving. I have enough ideas that I may never have enough time to get to them all and yet more keep coming.
The idea is a great thing to find. However, it's not the end all be all. It's a starting point but without any form of execution then it's nothing more than an idea that gets left behind. (Read the post on the image link cause it has some interesting points about ideas and the abandonment of ideas.)
Sure, having an idea is great. It's exciting, the nice little shiny thing that appeared. But you can only do so much with one little shiny speck as it won't go anywhere without development and effort. An idea is just an idea. Which is why an idea can't be copyrighted or anything like that. It's also possible for more than one person to have a similar or even same thought or idea. It's going to happen and we have to accept that fact.
So get that fun shiny idea, then take it somewhere.
Do you have an idea?
What will you do with it?