Self-inquiry, also known as "Who am I?" or "Self-enquiry", is a central practice in the teachings of Ramana Maharshi. It is a method of introspection and self-examination that leads one to the realization of their true nature.

The significance of self-inquiry in Ramana Maharshi's teachings lies in its ability to lead one to the ultimate goal of spiritual enlightenment. According to Maharshi, the root cause of suffering and ignorance is the identification with the ego, the false sense of self. Through self-inquiry, one can unravel the layers of conditioning and false beliefs that create this sense of separation from the true Self.

The practice of self-inquiry involves turning one's attention inward and questioning the source of one's thoughts and feelings. By asking "Who am I?", one is encouraged to look beyond the surface-level identities and roles that society has imposed on them. This inquiry leads one to the realization that the true Self is not limited by the body, mind, or ego, but is the pure consciousness that exists beyond all limitations.

Ramana Maharshi emphasized the importance of self-inquiry as a direct path to self-realization. He believed that all other spiritual practices and rituals were merely preparatory steps, and that self-inquiry was the most direct and effective means to attain enlightenment. He said, "The thought 'Who am I?' will destroy all other thoughts, and like the stick used for stirring the funeral pyre, it will itself be burnt up in the end."

Furthermore, Maharshi taught that self-inquiry should not be a mental exercise or a philosophical debate, but a sincere and earnest investigation into one's true nature. He encouraged his followers to constantly ask themselves "Who am I?" and to abide in the state of pure awareness that arises from this inquiry.

The practice of self-inquiry also has a practical aspect in Maharshi's teachings. He believed that by constantly questioning the source of one's thoughts and emotions, one can detach from them and ultimately transcend them. This leads to a state of inner peace and equanimity, which is essential for spiritual growth.

In conclusion, self-inquiry is a fundamental aspect of Ramana Maharshi's teachings. It is a powerful tool for self-discovery and liberation from the illusions of the ego. By constantly questioning the source of one's thoughts and emotions, one can ultimately realize their true nature as pure consciousness, free from all limitations.