The organs in the human body have entirely different functions. 

The cells which make up those organs act independently of each other. 

But in a healthy body, seemingly independent cells quietly depend on the functioning of the others. Because when one system stops working, the others can't function for long.

Just as organ systems are codependent for survival, so are human beings. Studies have shown that our happiness and health depends on our relationships not just functioning, but thriving.

 Sometimes the best we can do is bear each other's burdens and ease each other's pain. 

And hold each other's hands in the dark.