Hello, my name is Kimani Shorter. I have developed a theory of personality types as well as a career guide to go along with my theory. My idea is based on Carl Jung's theory of archetypes. This is a summary of my concept. http://kimanishorter.tripod.com/id1.html
I have added a career section to my site. Suitable careers for each type. http://kimanishorter.tripod.com/id2.html http://kimanishorter.tripod.com/id3.html http://kimanishorter.tripod.com/id4.html
I look at the archetypes, as personality firmware of the brain, which underly the human personality, and define us as a species (define the collective human propensities that we all share as a species). The lion has different firmware more geared to the needs of an advanced predator. The personality firmware (archetypes) progress and develop analogous to a seed that is growing into a plant. The seed has all the DNA needed to define its many stages of development, as well as its final character; leaves, flowers and fruit. But like a seed, since it grows in the environment, the final plant will also be dependent on the amount of sun or shade, soil structure, nutrients, pH, mold, bugs, etc. Someone with a green thumb can take the same seeds and grow a nice plant, while someone with a black thumb can make the same seed look mutant. In the case of the firmware, the environment is physical, social, cultural, emotional, intellectual, psychological, etc., with various combination of conditions having an impact, for good or bad, on firmware seed development. Typically, each of us is more proficient in farming some of the firmware, better than others; strengths and weaknesses.
I think society and schools take this idea and run with it. No one is perfect in everything, and they want us to specialise in certain things. Who gets to choose which route you go in life, and what happens at schools today especially in all nato countries? The route you take may not be you making those choices anymore.