Mary Kay Ash and her son built a multi-level marketing company to be the sixth largest MLM company in the world in 2015. With a wholesale value of 3.7 billion dollars, how did Mary Kay rise to the top? Mary Kay chose her corporate symbol as the bumblebee, an insect that defies the laws of aerodynamics and flies despite its scientifically proven inability to do so. Set goals that even others might tell you are impossible, and remind your team that they can do anything.