Book excerpt: Theory of Seven I am psychology, what it should be: simple, clear, without clever words.This is the doctrine of the seven inner self, from which the character of man is formed, 7 psychical types and 7 team roles are born.The theory of seven I is a powerful tool for knowledge the inner world: it allows you to understand yourself and others beings, find in the depths of the soul hidden self, turn the peculiarities of his nature to competitive advantage.