Self

noun: self; plural noun: selves
a person's essential being that distinguishes them from others, especially considered as the object of introspection or reflexive action.

"our alienation from our true selves"

synonyms: ego, I, oneself, persona, person, identity, character, personality, psyche, soul, spirit, mind, (inner) being

"listen to your inner self"

pronoun: self
oneself, in particular.
used ironically to refer in specified glowing terms to oneself or someone else.

adjective: self
(of a trimming or cover) of the same material and color as the rest of the item. "a dress with self belt"