Acharya Prashant addresses the challenge of objectively investigating oneself versus investigating the external world. He explains that it is easier to be objective with external phenomena, like in a laboratory, because one is not personally invested. However, when it comes to investigating one's own life, it becomes a difficult and messy affair. The key to this internal investigation is detachment. The speaker clarifies that detachment is not the opposite of love but rather a product of it. True self-love motivates a person to want to understand their own suffering in order to end it. This desire to know what is happening within oneself requires an independent, neutral, and unprejudiced examination, which is the essence of detachment. Detachment, therefore, is the absence of inner biases, whether they are positive or negative. The speaker provides examples of such biases, such as blaming the world for one's misfortunes or attributing failure to external factors like a noisy examination hall. He cautions against two flawed attitudes: one is to falsely believe one is already great, and the other is to resign oneself to mediocrity. The correct approach is to be realistic about one's current state while maintaining faith in one's infinite potential. One should frankly accept, "This is where I stand, but I am not destined to stay here. My destiny is to climb to the skies." He emphasizes that self-knowledge is the most important knowledge, more so than knowledge of any external subject. When one truly wants to know oneself, the mind gains the sharpness and focus needed to tackle the problem, free from attachment and prejudice.