I'm 23, I want to learn beauty and fitness, and I don't want my life to go downhill. If you want to learn a promising job, I won't say that you have no education.
As long as you have a studious heart, major is the way out. At present, if you don't have a high degree, it is easy to be arranged in a private beauty shop, and the industry is mixed. I suggest you learn to keep fit. There are many yoga instructors, and all kinds of shaping and fitness meet the needs of the society now. Moreover, this kind of health-preserving place can accept apprentices if you learn more formally.