Waking Up

Waking Up: A Guide to Spirituality Without Religion is a 2014 book by Sam Harris that discusses a wide range of topics including secular spirituality, the illusion of the self, psychedelics, and meditation. He attempts to show that a certain form of spirituality is integral to understanding the nature of the mind.

https://en.wikipedia.org/wiki/Waking_Up:_A_Guide_to_Spirituality_Without_Religion