The phrase "gives a piece of one's mind" usually indicates confrontation or criticism, but there are plenty of antonyms that can convey a different tone or message. Substitute phrases like "praises," "compliments," or "encourages," to show appreciation or support. Alternatively, use terms such as "avoids," "patiently listens," or "shows empathy," to demonstrate a more understanding or compassionate attitude. Antonyms of this phrase can communicate a range of perspectives and attitudes, from positive and uplifting to patient and sympathetic. By using alternative phrases, you can convey a variety of messages that can be more appropriate to the situation or audience.