If you think is a good idea then there is (probably) a way to fit in the market. The thing is to not surrender before even trying.
I consider myself a creative person I have a lot of ideas, but 99% of the times if those ideas stay only in my head they are raw, impossible to execute with success. What I do is to throw them in paper, be self critique, ask for external opinion (included in your target age/gender/social class range or not). From all that the initial idea gets polished and it has a better chance to lead you to your goals.
Its all about doing steps (._.')