The phrase "brake one's heart" suggests a feeling of devastating heartbreak, intense sadness or disappointment. However, there are several antonyms that can be used instead of this phrase to imply happy emotions, such as "mend one's heart" or "heal one's heart." Other antonyms could be "enliven one's heart," "rekindle one's heart," or "revitalize one's heart." These phrases not only convey positive emotions but also suggest new beginnings, positivity and hope. Using these antonyms, one can express joyful feelings while avoiding the negative connotations that typically accompany the phrase "brake one's heart".