For many years it was assumed that we all have an emotional thermostat which determines how happy we are in life. Some people were presumed to have a happy disposition, while others had a miserable one. Although major life events, such as the death of a loved one or winning the lottery, can significantly alter mood, sometimes for many weeks or months on end, it was always assumed that there was a set-point to which we always return. This emotional set-point was presumed to be encoded in our genes or became set in stone during childhood. To put it bluntly, some people were born happy and others
...more