It's funny how things just click. How information about the traditions and ancient knowledge that I learn often connects together. The four castes mentioned in Kaballah match with four types of psyche and intellect groups that all humans fall into. Same goes for Freud's steps of evolution that every human being goes through as a right of passage while growing up.
Both, the human body and the soul itself have four levels of self awareness, just like the castas again. These four stages are the steps that one has to go through to evolve and achieve. From a perspective of the body, to begin with, the four levels are: Physical body, Feelings, Emotions and common thinking. These are the four steps of evolution that every child goes through growing up. A child learns to move, then to feel the world, to express emotions and then to think. This matches with four Kabbalah's castas of a worker, trader, warrior, and magician respectively and the way people who belong to these groups look at and perceive the world. To match these from the other, from the soul's side the four levels are intellect, event connections, motives, values and mission. So again here are the four castas from the soul's perspective. Every single human is born with an ability to expand, evolve to and perceive these levels but everyone has a cap of what level they can access and be aware of. Fears and various emotional triggers often put these caps of human minds that do not allow many people to perceive their soul and their motives, values and the mission.
Unwinding these situations and blocks is the key to evolving towards higher levels of being and learning yourself as for what you are meant to be. The highest level of consciousness - knowing the mission. Uncovering lower level blocks in a body will allow to access higher levels of the soul and to become aware of the information of what caused physical and emotional level issues.