This “authenticity,” also tackled by Derrida, inspired by Aristotle and Heidegger, is a central preoccupation. Is it possible to stay in this state always? If so, how?

[..] I have been strongly impressed by the radical opposition between everyday life-which is lived in semiconsciousness and in which we are guided by automatisms and habits without being aware of our existence in the world-and of the privileged states in which we live intensely and are aware of our being in the world. Bergson as well as Heidegger clearly distinguished these two levels of the self: the self that remains at the level of what Heidegger calls the “they,” and the one that rises to the level of what he calls the “authentic.”

Pierre Hadot
The Present Alone is Our Happiness