Acharya Prashant explains that the moment an individual becomes ready to improve themselves, hope for the world's improvement immediately arises. He suggests that those who claim the world or others cannot change are actually reflecting their own inability to change. When one begins to experience purity and innocence, they naturally desire to share that state with everyone else, leading to a sense of hope and faith. He emphasizes that transformation requires taking a physical or practical step forward rather than just sitting and analyzing one's problems from within a closed, dark environment.