Check out this interesting article in BusinessWeek by Marketing Guru Doug Hall, called "Ideas to Grow On." He talks about a study done by his Eureka! Ranch of small and medium sized companies. The results were intriguing. Those who brainstormed and worked on many ideas for growth grew 5.8 times faster than those with only a few options.
Interesting, since we usually hear that too many choices can cause confusion and inaction. His study showed that the wealth of ideas caused small businesses to flourish and employees to be more optimistic about the future. A good example of this would be Google, who has employees working on a wide variety of new ideas.
Take this lesson to heart. If you only have one new idea you may convince yourself it's good. If you have several, you can afford to throw some out and rework them until they're great.