In terms of the principle of consistencywithin the framework of a modern synergetic approach the «subject of psychic self-organization» category has theoretical background. The problem of self-organization and its place in psychological category system has been considered. Psyche is viewed as self-organizing, information and semantic system of gaining and evaluating experience through theoretical analysis and systematization of information from academic and philosophic sources in heuristic modeling. Semantics goes beyond the scope of linguistics and formal logic and becomes an ontological and methodological criterion and a psychological principle. Viewing semantic principle as a «system-forming» one, «Semantic psychology» is gaining its rightful place in the science of psychology, as well as the course «Psychology of a subject».