According to Advaita Vedanta, enlightenment is not something that can be attained, as it is the inherent nature of the self (Atman) and ultimate reality (Brahman). It is not a state or achievement, but rather a realization of the true nature of oneself and the universe.

In Advaita Vedanta, the self is considered to be the ultimate reality, the essence of all existence. However, due to ignorance and the illusion of duality, individuals identify themselves with their limited ego and body, and fail to recognize their true nature as the self. This leads to suffering and a perpetual cycle of birth and death.

The goal of Advaita Vedanta is to remove this ignorance and realize the oneness of the self and Brahman. This is done through the practice of self-inquiry, which involves questioning the nature of the self and seeking to understand its true essence. Through this process, one can come to the realization that the self is not limited by the body or mind, but is infinite, eternal, and one with Brahman.

Enlightenment, therefore, is not something that can be attained through external means or practices, but rather through the understanding and realization of one's true nature. It is a state of being, where one is free from the illusion of duality and experiences the ultimate reality of oneness.

Advaita Vedanta also emphasizes the importance of a guru or spiritual teacher in the journey towards enlightenment. The guru serves as a guide and helps the individual to overcome their ignorance and realize their true self.

In conclusion, while Advaita Vedanta does not view enlightenment as something that can be attained, it provides a path for individuals to realize their true nature and experience the state of oneness with Brahman. Through self-inquiry and guidance from a guru, one can attain this realization and live a life free from suffering and the cycle of birth and death.