What Does The Science Say?

The default mode has a "prospective bias". Depending on the person, their history, and their biological dispositions, that prospection could tilt toward worrying or hoping. There are 3 different types of day dreaming: 

1. Positive constructive daydreaming: lots of playful, wishful imagery and plan-making thoughts.
2. Dysphoric daydreaming: lots of anguish and obsessive fantasies. 
3. Poor attentional control: hard to concentrate on anything

Research indicates that a disturbed DMN is a mechanism in depression. Our greatest source of suffering isn’t the default mode but when we get stuck in the default mode.