Individuality is that method by which pre-existing components of culture and communication are reassembled within a single mind and expressed outwardly through behaviour and material self-expression as an affirmation and validation of self-existence. Counter-intuitively (or perhaps ironically) – individuality is often expressed in ways which require the anchoring of that aggregate self upon shared notions of self-identity and cultural presence; while any specific configuration, instance or collection of ideas, concepts and behaviours may be unique to a specific person – the vast majority of those clustered contents of personality are borrowed from a shared world of identity and self-expression. We might choose what to incorporate within our selves, to some extent, and while this remains an effectively creative act – we rarely choose what that menu of options actually consists of – these taxonomies are mostly pre-existing in the world beyond our physical and mental being. (Creativity itself is often simply the recombination of existing concepts into new and novel, useful configurations and constellations.)
That central orb of internalised concepts and ideas which, having been formed in your infancy through foundationally reflexive psychological processes (i.e. https://en.m.wikipedia.org/wiki/Mirror_stage), becomes a central point around which you will spend your life in constant free-fall. The difference and distance between your experienced, lived (fractured, discontinuous, messy, confusing) self and that internalised, idealised (whole, logical, well-ordered, intelligible) self is mandatory to play this game of self. You require the constant approach (orbit) towards that ideal self without ever being able to attain it because the psychological dissonance and friction we experience in asymptotic approach to that wholeness is the precursor and constitutive psychological “space” which allows for the possibility of any other elements in this dynamic symmetry. You can not ever actually attain that whole self because you are always already only a entity who’s existence is defined and made possible as in directed aspiration towards that self – the purpose of you is to be oriented in this way towards your own, internalised self-image. (This dynamic and symmetry or pattern could also be used to explain cultural identities – if there were no explanatory bridge from self to world in this, it would hardly be very compelling as an explanatory framework.)
This is a distributed and omnipresent psychological dynamic which surfaces through diverse channels and vectors of displacement and activity. Being aware of this elementary interior turbulence, fruction and discontinuity (between lived self and idealised self) is useful as it allows us to intuitively develop understanding of the reasons (and fallacies) by which we all often pursue our desires and through which we are all also do very often and easily manipulated by others and externally motivated influence.
To be an in-divid-ual, undivided, an atomic and irreducable entity is, paradoxically, always already to be divided within (or as against) one’s own self.