Philosophers and spiritual thinkers explore the profound question of self and life's purpose. Socrates, Nietzsche, and Sartre offer diverse views on identity and existence. Yuval Noah Harari presents a popular story of fulfilling one's unique function. Ancient Indian texts like Chandogya Upanishad and teachings of Ramana Maharshi offer spiritual insights. Ultimately, the self may be a trinity of awareness, goodness, and divinity.