Why can success, power, and good health become tests of pride?

This source-based Hagut Yosef essay explores the question: Why can success, power, and good health become tests of pride? The canonical Hebrew article develops the theme through Torah sources and reflection on human life. This localized discovery layer preserves the meaning and source identity; it does not add a new halakhic, historical, psychological, medical, legal, or empirical claim beyond the Hebrew source.