Acharya Prashant explains that while both mental illness and mental health are contagious, there is a significant difference in their transmissibility. Truth is inherently difficult to convey because it is already present within everyone; it is like trying to wake someone who is already awake but pretending to sleep. In contrast, falsehood spreads rapidly and easily, much like a highly transmissible virus. He emphasizes that while it takes immense effort and time to build inner strength through spiritual discourse, a very short period of bad company or worldly distraction can completely destroy that progress. He uses the analogy of a newborn child to describe one's nascent understanding of truth, noting that it is extremely fragile and requires constant protection and care until it becomes strong.