Antonyms for the phrase "are one's fate" can vary depending on the context in which it is being used. But generally, antonyms for this phrase could be "control one's destiny," "have agency," "determine one's path," or "choose one's own fate." These antonyms suggest that individuals have the power to shape their own lives and make decisions that lead to different outcomes. Rather than being predetermined or predestined, these antonyms emphasize the importance of personal choice and free will. Ultimately, these antonyms challenge the idea that one's fate is entirely out of their hands and instead promote the idea of taking responsibility for one's life.