The Self-Propelled Idea
If you're having to work too hard to push an idea through - in fact, if you have to "push" at all - it could be a sign that the idea isn't really all that valuable, or that it's just "half baked."
Good ideas - really really good ones - often create their own momentum. Consider the iPad. Despite a lot of initial skepticism and negativity, it was ultimately able to top the iPhone in early sales. Granted, it had the Apple marketing machine behind it. But the sheer power of the idea itself was ultimately what propelled it to success.
Don't settle for "novel," "interesting" or even "pretty good." Those descriptors suggest potential. Keep at it until you have yourself a game changer!