To identify the perfect niche for you

To identify the perfect niche for you, visit forums where your prospective customers congregate and observe. Hunt down the experts and talk with them. Buy or borrow books on them.

There are no two ways about it, research is very necessary to be knowledgeable in any field. Just remember that it is much easier to become an expert in a niche area with fewer key players around. You may not be the best, but your prospects in the niche with fewer experts around will come to recognize you as one of them.