Meaningful dimensions of human subjective reality have been studied in this paper. Human personal experience as a unique constellation of knowledge and feeling is viewed as a constitutive foundation of subjective reality. Meanings bestowed, personal experience has been organized in the structures of subjective meanings. It has been substantiated, that to avoid any kind of meanings discrepancy (to preserve the integrity of his personal identity) human being permanently (but unconsciously) re-interprets his/her experience in order to bestow new meanings upon previously acquired experience which proves to be decisive in personal human identity formation. 

Subjective reality as constituted by the system of subjective meanings appears to be pre-conditioned on both human preferences and choices (structures of relevance) and previously acquired experience which jointly form cognitive patterns of further interpretations – biographical situation of the person under consideration. Explained, why unavoidable difference of biographical situations as cognitive foundation of further subjective interpretations does not lead to principal misunderstanding in human communications.

Subjective reality is formed not only under the influence of previously acquired experience. It seems to be socially constructed by mirror-reflection in the minds of the significant others. Only by means of mirror-reflection human being is able to make perfect his/her own personality. Self-perception appears nothing but generalized image of one’s own self in the mirror-minds of the primary social group. 

Reflective essence of personal identity means, that perception of “background expectations” to a great extent controls human self-development. Philosophically, it means, that human subjective reality permanently needs to be communicatively supported. It enters into practice by means of permanent subjective meanings exchange in primary social groups of personal identification. It implies, that humanities and social sciences (sociology of the small groups, cognitive psychology, etc.) should include in their field of research tacitly presupposed, implicit knowledge, the so-called “taken for granted” in order to reveal cognitive foundation which makes linguistic communications – as constitutive basis of human subjective reality — possible.