Definition of "oneself" []

• One's own self: (pronoun)
• Used reflexively as the direct or indirect object of a verb or the object of a preposition: One can congratulate oneself on one's victories. (pronoun)
• Used in an absolute construction: When in charge oneself, one may rearrange the committees as one pleases. (pronoun)
• One's normal or healthy condition or state. (pronoun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Armstrong was brought to this project by Robert Star, his friend, business partner, biggest booster and an individual who clearly shares the artist's credo that believing in oneself is critically important."
• "This helped me realize what faith in oneself is all about!"
• "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."