Edison, New Jersey
Ask yourself the question "If I had all the money in the world and never needed to work what would my main hobby be?" Pick an aspect of that hobby you are capable at and master it and monetize it. It soundd almost cliche to say but it really is that simple. There is someone out there doing what you love most and getting paid to do it. Either get better than them at it or innovate a similar system. If you can't find a way to monetize it, blog and podcast about it and be the expert on the content of it, then monetize that! There are plenty of books out there to monetize your hobbies.