Acharya Prashant explains that for a person to achieve liberation, they must possess two wings: self-observation and the company of the Truth (Satsang). While self-observation involves learning from one's own life, Satsang involves learning from others and the scriptures. He emphasizes that Satsang becomes crucial when an individual is dishonest or clever in their self-observation. Many people deceive themselves by claiming everything is fine while repeatedly making the same mistakes. In such cases, one needs a guide who has the authority to be firm and point out their errors, as modern notions of 'being chill' often lead to a lack of accountability and repeated failures.