The phrase "changes heart" refers to a shift in one's opinion or feelings. Antonyms for this phrase could include words such as "unchanging opinion," "steadfast conviction," or "fixed perspective." These words suggest a sense of constancy and unwavering belief, as opposed to a willingness to adapt and evolve. Alternative antonyms could also include words such as "close-mindedness," "stubbornness," or "inflexibility." These words connote a reluctance to change and an insistence on maintaining one's current beliefs or attitudes. Ultimately, the antonyms for "changes heart" highlight the importance of an individual's willingness to engage in self-reflection and embrace growth and change.