pronoun. A person's self - a general form of himself, herself or yourself
the GNU version of the Collaborative International Dictionary of English
pronoun. A reflexive form of the indefinite pronoun one. Commonly written as two words, one's self.
The Century Dictionary and Cyclopedia
One's self; a person's self; himself or herself (without distinction of gender): formed after the analogy of himself, herself, itself, and used reflexively.
Word Usage
"But among today's young adults, Rachel notes, "personal identity is not as linked to what one calls oneself as it was in other generations because we have so many ways of representing ourselves" -- ranging from email screen names to Facebook accounts."