Acharya Prashant explains the concept of 'Titiksha' as mentioned in the Bhagavad Gita, where Shri Krishna advises Arjun to endure the dualities of pleasure and pain, heat and cold. He clarifies that these experiences are transient and unreal because they are not eternal. However, Shri Krishna does not simply dismiss them as an illusion to Arjun, because Arjun is currently identified with his ego rather than his soul. The speaker emphasizes that for someone identified with the ego, these experiences feel very real, and the path to liberation lies in enduring them while performing one's duty.