"Gotten off one's chest" refers to the act of releasing or sharing one's thoughts, feelings or emotions that have been weighing them down. Its antonyms include bottling up, suppressing, concealing, hiding, repressing or holding back. People tend to bottle up their emotions for various reasons, such as fear of judgment, rejection or vulnerability. However, psychologists warn that prolonged emotional suppression can lead to stress, anxiety, depression and even physical ailments. Therefore, it's often advisable to confide in a trustworthy listener, seek professional help or adopt healthy coping mechanisms to manage one's emotions. Bottling up emotions can be detrimental to one's mental and physical health, whereas letting it out can be liberating and promote emotional well-being.