A simple system of looking at personality styles as growing out of one's innate temperament, and of which there are only four types: Kings or Queens, Warriors, Magicians, or Lovers. These are based on the three fundamental aspects of behavior and psychological function: the emotions, the intellect, and our maturity of decision-making.
The first two - emotional style and intellectual style - form two axes which cross, showing all possible current functioning in these two areas, and whose average function reveals one's base temperament. However, it is dynamic, where one can grow more mature over time (in terms of the wisdom of making constructive, Win/Win decisions), moving from the outer reaches of the circle graph in which the two axes exist (and which pertains to one's higher level of narcissism, or immaturity), toward the center of the circle (where maturity, balance, and a well-rounded skill at both emotional processing and intellectual processing exist.)
In this system, opposites attract and make for better friendship and partnership, by way of complementary personalities, emotion and intellect. As such, Kings and Queens are good matches for Magicians, and Warriors are good matches for Lovers. Those matches for partnership and friendship which are abutting each other on the diagram make for either a good intellectual match or emotional match, but not both, and those paired who are of the very same temperament or personality style set themselves up for competition and narcissistic gratification and narcissism in how they treat each other (Kings and Queens are terrible matches, as are Lovers and Lovers, Warriors and Warriors, and Magicians with Magicians.
This system has a basis in the more logical, rational use of the ideas of Galen the physician and philosopher, who say there being four types of personality in the Phlegmatic, Choleric, Sanguine, and Melancholic personalities, which roughly correlate with Kings or Queens, Warriors, Magicians, and Lovers. In the system, then, these are sometimes referred to with reference to Galen as Phlegmatic Kings and Queens, Choleric Warriors, Sanguine Magicians, and Melancholic Lovers.