Antonyms for the phrase "changed ways" could include "maintained habits," "stayed the same," or "remained unchanged." These antonyms suggest an adherence to consistency and routine, rather than a shift or alteration in one's behavior or attitude. While changing one's ways may be seen as positive or necessary in certain situations, the antonyms imply a sense of stability and reliability that may be valued in other contexts. Ultimately, the most appropriate antonym for "changed ways" will depend on the specific context and the intended meaning.