Under the influence of scientific and technological progress, the fitness industry has gradually embarked on a standardized development track, and at the same time, scientific and technological competition and talent competition have become the mainstream forms of social competition. In order to develop steadily and for a long time in the complicated social competition, the fitness industry has increased the rigid requirements for fitness coaches to apply for jobs. Therefore, in this world, if a fitness instructor wants to be invincible and forge ahead, he needs to be desperate to build a high-quality compound self. In plain language, he says, "Our biggest competitor is not others, but ourselves. Only by defeating yourself can we be fearless. " Therefore, no matter how fierce the social competition is, if we strive to create a perfect self, we can look down on the cruel challenges and competition indifferently.