Acharya Prashant explains that the moment an individual becomes ready to improve themselves, they immediately gain hope that the world can also improve. He suggests that if someone claims the world cannot change, they are essentially admitting their own inability to change. The taste of purity and innocence is such that one naturally desires to share it with everyone, leading to a state of hope and eventually faith. He emphasizes that as long as the body and breath exist, remembrance of the truth should be constant, using life itself as the method.