Eat your heart out

The phrase "Eat your heart out" is an idiomatic expression that is used to convey a sense of superiority or accomplishment in a supposed rival or competitor. It implies that the person being addressed should feel jealous, envious, or impressed by the achievements or qualities of the speaker. It can be used lightheartedly or sarcastically to boast about something one has achieved or to tease someone about their perceived lack of achievement.