The term "deceives oneself" implies being dishonest with oneself, but there are several antonyms that convey the opposite idea. One such antonym is "being honest with oneself," which means acknowledging one's true feelings, thoughts, and shortcomings without any deception. Another antonym of "deceives oneself" is "accepting reality," which means coming to terms with what actually exists instead of denying or manipulating it. The idea of "being truthful with oneself" also works as an antonym, indicating that one is straightforward with oneself and doesn't convince oneself of things that aren't true. Overall, these antonyms emphasize the importance of introspection and facing the truth, rather than self-deception.