John was willing to invest the time and energy to learn more than the basics, and ultimately to elevate his game to a whole new level. He wasn’t just satisfied in being a mere medicine show “Doctor” peddling a “one bottle for whatever ails you cure.” Rather, his mindset was to expand his product line, and with it his base of customers. His strategy was brilliant: not only niche out your target market, but within your target market, sub-niche, and build out your line of products to match each sub-niche.
