Jane McGonigal

Urgent optimism is the desire to act immediately to tackle an obstacle, combined with the belief that we have a reasonable hope of success.

Positive health means becoming whole-heartedly engaged with our own health care. It means not outsourcing our health to the health care system. It means getting rid of the fear and paralysis we too often feel, and instead cultivating a sense of agency.

It seems like what happens when we play games is that we go into a psychological state called eustress, or positive stress. It's basically the same as negative stress in the sense that we get our adrenaline up, you know, our breathing rate quickens, our pulse quickens.

Scientists have demonstrated that dramatic, positive changes can occur in our lives as a direct result of facing an extreme challenge - whether it's coping with a serious illness, daring to quit smoking, or dealing with depression. Researchers call this 'post-traumatic growth.'