Why is Tu BiShvat called the New Year for Trees, and what can it teach about a person?

This source-based Hagut Yosef essay explores the question: Why is Tu BiShvat called the New Year for Trees, and what can it teach about a person? The canonical Hebrew article develops the theme through Torah sources and reflection on human life. This localized discovery layer preserves the source’s meaning and identity and does not add new halakhic, historical, psychological, medical, legal, political, scientific, or empirical claims beyond the Hebrew source.