My mom asks me that all the time :).
The short version is that I always thought, from the very first time I heard the traditional approach to SAT guessing in high school, that the popular approach to test-taking strategy was wrong. So I did my own thing instead. Over the years, friends and family would come to me for help with their tests, until I eventually made test prep my full-time occupation.
Today, I pride myself on doing things differently, from my test-prep strategies to my solid guarantee (the strongest one in the industry as far as I know).
For more on my background and influences, please check out this link: