Most of us let our negative emotions persist longer than is necessary. Becoming suddenly angry, we tend to stay angry—and this requires that we actively produce the feeling of anger.
Waking Up: A Guide to Spirituality Without Religion
It is a 2014 book by Sam Harris. Harris 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.