Antonyms for the phrase "becoming psychotic" would be "sane," "mentally stable," or "sensible." These words imply a state of mind that is rational, balanced, and able to function without delusions or hallucinations. Other antonyms could include "clear-headed," "level-headed," or "reasonable," all of which suggest a person who is able to think clearly and make rational decisions. These antonyms serve as a reminder that mental health is a fragile and important aspect of overall well-being, and that it is important to seek help if symptoms of psychosis or other mental health conditions arise.