I was watching this movie called ‘Just like Heaven’  in which a character who is a psychologist is seen talking to a friend who has been something of a recluse for over two years,  ever since the passing away of his wife.   The psychologist  is asking his friend, the protagonist,  to go out more often,  meet more people and be more socially active. 
His dialog goes thus "Look around you, see this? This is the world, join it! Stop swimming around in your own mind. That is a dangerous neighborhood that you should not go into alone."

How often do we do the same thing?  Do we realize the implications ?  The mind can indeed be a dangerous neighborhood,  if one is all alone,  or seems to find himself/herself so.