Antonyms for the phrase "broke one's neck" could include phrases such as "smooth sailing," "easy going," or "unhurried pace". These phrases invoke a sense of calm and deliberation, in contrast to the violent and sudden action implied by "broke one's neck." Other antonyms might include "slow and steady," "careful progression," or "methodical approach." These words emphasize the importance of taking one's time and proceeding with caution, rather than rushing headlong into a situation without proper consideration. Antonyms for "broke one's neck" suggest a sense of thoughtfulness and careful planning, in contrast to the reckless abandon of the original phrase.