Born to Be Happy, Through a Twist of Human Hard Wire:

In the course of the last year, the woman lost her husband to cancer and then her job. But she did not come to my office as a patient; she sought advice about her teenage son who was having trouble dealing with his father’s death.

Despite crushing loss and stress, she was not at all depressed— sad, yes, but still upbeat. I found myself stunned by her resilience. What accounted for her ability to weather such sorrow with buoyant optimism? NY Times