Acharya Prashant explains that the moment an individual is ready to improve themselves, hope for the world's improvement naturally arises. He clarifies that when someone claims the world or others cannot change, they are essentially reflecting their own internal stagnation. A person who begins to purify themselves will immediately perceive that everyone is capable of and eager for improvement. This state of purity and innocence is something one naturally desires to share with others, leading to a sense of hope and eventually faith.