From Solitude by Anthony Storr:
The capacity to be alone is a valuable resource when changes of mental attitude are required. After major alterations in circumstances, fundamental reappraisal of the significance and meaning of existence may be needed. … Changes of attitude take time because our ways of thinking about life and ourselves so easily become habitual. …
Suppose that I become dissatisfied with my habitual self, or feel that there are areas of experience or self-understanding which I cannot reach. One way of exploring these is to remove myself from present surroundings and see what emerges. … No one can tell, until he has experienced it, whether or not this necessary disruption of former patterns will be succeeded by something better. …