Self-inquiry is a fundamental aspect of Nisargadatta Maharaj's teachings and is considered to be the key to understanding the true nature of oneself. This practice involves questioning the nature of our existence, our thoughts, and our perceptions in order to uncover the true self that lies beyond the limitations of the mind.

According to Maharaj, the root cause of all suffering and confusion in life is the identification with the body and the mind. He believed that we are not our bodies, thoughts, or emotions, but rather the pure consciousness that exists beyond them. Self-inquiry is a means to detach ourselves from these temporary aspects of our being and to discover our true essence.

Maharaj emphasized the importance of going beyond the limitations of the mind and accessing the state of pure awareness. This can only be achieved through self-inquiry, as it allows us to question our thoughts and beliefs and to recognize them as mere illusions. By constantly questioning the nature of our existence, we can gradually peel away the layers of conditioning and false identity, and come closer to our true self.

In his book "I Am That," Maharaj often uses the phrase "I am" to guide readers towards self-inquiry. He encourages us to focus on this simple statement and to investigate what lies behind it. By constantly questioning "Who am I?" or "What am I?", we can begin to unravel the layers of our conditioned self and discover the pure consciousness that is our true nature.

Self-inquiry also plays a crucial role in breaking down the ego, which Maharaj viewed as the root of all suffering. By questioning the ego and its attachments, we can begin to let go of our identification with it, and instead, connect with the limitless and eternal consciousness that exists within us.

Furthermore, Maharaj believed that self-inquiry is a practice that can be done at any moment, in any situation. It is not limited to a specific time or place, but rather a constant process of questioning and introspection. By incorporating self-inquiry into our daily lives, we can gradually let go of our attachments and illusions, and experience a state of inner peace and freedom.

In conclusion, self-inquiry is an essential aspect of Nisargadatta Maharaj's teachings. It serves as a powerful tool for self-discovery and liberation from the limitations of the mind. Through this practice, we can uncover our true nature and experience the ultimate truth of "I am that I am."