Filling a need is a lot easier than creating a need. You must listen to your audience and know what their needs are. Do not waste your time and create something that no one wants.
He who cannot be a good follower cannot be a good leader.Aristotle
You must get in the minds of the group or niche you want to help. What are there pains and struggles? What are they doing that is wrong? What do they believe that is false?
If you create a better mouse trap or disprove something that everyone believes to be true then you will stand out.