Nourish your self-esteem; I've got my focus elsewhere. This quote suggests that while you attend to boosting your own confidence and self-worth, the speaker has their attention on different matters. It implies that there's no need to seek validation or approval from others, as everyone has their own priorities.
"Feed your own ego" encourages the idea of self-care and self-appreciation. It implies that taking care of your self-esteem is a personal responsibility. Instead of seeking external validation, this phrase emphasizes the importance of recognizing your own value.
The quote also touches on the idea that people have their own lives and concerns. "I'm busy" conveys the notion that the speaker is preoccupied with their own tasks and goals, indicating that they're not focused on catering to someone else's ego. It emphasizes the individual nature of personal growth and development, suggesting that everyone should prioritize building their own confidence and self-worth independently.