Acharya Prashant explains that the soul is indestructible and cannot be affected by physical elements like weapons, fire, water, or air. He emphasizes that one's liberation and bondage are entirely within oneself, as stated in the Amritabindu Upanishad. The mind acts as the student, and its own purity, peace, and stability are the true teacher. He clarifies that while it is popular to say 'be your own light,' one must first acknowledge the darkness within. Admitting that one is in darkness is a sign of humility and true light, as ignorance often disguises itself as knowledge. True courage lies in admitting one's fears and shortcomings rather than hiding them under a false pretense of light.