Power
You're something like a mechanic or doctor—ninety-five percent of your clients are clueless about the intricacies of work that you do. The inner workings of our cars, bodies, and system of economics are great mysteries to most people, and you'll find that a large number of individuals will come to you and put themselves entirely in your hands, trusting that you know what is best for their life savings.
Many of your clients will have made fortunes inventing a new semiconductor or iPhone app, or they found oil under their farm. Regardless, if they're seeing you, it's highly likely that they know squat about investing and you are The (Wo)Man they want to advise them on all things money. You could keep them safe and sound, or you could ruin them. We recommend the former.