The Science of Mind Wandering: Empirically Navigating the Stream of Consciousness

Just think: The challenges of the disengaged mind | Science
science.org
The Wayward Mind by Guy Claxton.
Joe Vitale • Zero Limits: The Secret Hawaiian System for Wealth, Health, Peace, and More
Our default waking mode (and also during dreaming phases of sleep) is not a brain at rest, but what is known as mind wandering.
Venkatesh Rao • Make Your Own Rules
In situations of low stress and safety, mind-wandering will be a gift, a pleasure, a creative force. In situations of high stress or danger, mind-wandering will be a torment.