Dear John:

How do you find a niche market to enter? Is there a series of questions you typically ask yourself that lead you to an idea?

—Matt, San Diego

My model for creating a valuable business (and keeping as much of the equity for yourself) involves controlling the pricing of what you sell, which means you never respond to requests for proposals (RFPs) and you get paid by customers before you deliver your product or service.

This kind of pricing authority means you need to find a quiet little niche in which you can be the big fish who sets the rules. The secret to finding a niche is thinking about the things in your own life that are either missing or not working ideally.

For example, I'm preparing for a half ironman triathlon, and I use power gels on long training runs. I have a pair of Descente running shorts with a small back pocket on the outside of the fabric. It is the perfect size to store two gels, and it gives me easy access to the gels without stopping to shove my hands between my legs to fish one out from a front key pocket, which is where most running shorts' pockets are.

To be clear, casual runners seldom need to use gels, so it is no surprise that the major manufacturers ignore the extra work and cost of sewing a pocket in the back.

My trusty old Descentes are getting frayed, and soon I'll be risking an indecent exposure citation. I need new shorts, but no matter how hard I try, I can't find any with a similar pocket. Descente has stopped making my favorites, and I've tried probably 10 other manufacturers' shorts, and all just sew a key pocket into the crotch. I wonder if they have ever run 13.1 miles with a power gel rubbing against the inside of their thigh.
If I were starting a business today (I'm not), I would be tempted to develop a line of running clothes for long-distance triathletes.

When you're participating in your hobbies and interests, ask yourself, "What is the one thing that would make this activity better?" and that's when you'll stumble on a niche that you know intimately in an area that you care deeply about.

John Warrillow is the author of Built To Sell: Creating a Business That Can Thrive Without You, which was released by Portfolio/Penguin on April 28, 2011.