Not everyone wins awards, has appeared on television or is a published author. Fortunately, there are other ways of standing out in your industry. Perhaps you have developed a new, or different, system, process or method that helps people to learn what you teach. How did you come to be doing what you do - what's your personal story? (I think everyone's a bit fed up with the extreme rags to riches bit now, so no need to go overboard) but if you did overcome some particular obstacles on your journey - be sure and include them in your story. After all, YOU are the unique part of your business.
What I suggest you do is ask 2 or 3 people who know you quite well (colleagues, fellow networkers, or clients) for some input. Ask what words they would use to describe you, and what strengths they observe in you. The results are often illuminating. Another good tip is to have a look at testimonials you've received - and I mean really look at what's been said. You may well find, as I did, the same phrases cropping up again and again - showing you just what makes you stand out from the crowd.
I'd love to hear how you found your hidden difference. And if you enjoyed reading this post, please re-tweet so others can read it too!