Write the next sentence in the following story.

How to develop a product
Identify a consumer need.
The difference between failed products and hot-sellers is need. As an aspiring entrepreneur and innovator, your goal is to create something that people don't even know they need.
What's missing from the marketplace? What do people want? There's no easy way to answer this question, or we'd all be millionaires. Keep an idea notebook with you at all times, and try to keep track of times when you're frustrated with something small and inspiration strikes.