Antonyms for the phrase "eats one heart out" include cheerful, content, happy, satisfied, and pleased. Whereas "eat one's heart out" implies a state of anxiety and depression, these antonyms suggest the opposite - a sense of fulfillment, happiness, and general satisfaction. Being cheerful can indicate a positive and upbeat mood that is free from worry or anxiety, while being content suggests a sense of satisfaction and acceptance. Similarly, being happy and pleased often implies contentment and joy with one's life, and a lack of need for more or better. By focusing on these antonyms, we can reshape our perspective to embrace positivity and happiness.