Of course, we all want to be happy. But how could we continue living happy and what it takes the long life and also be happy?
For 70 years scientists from five generations in the U.S. have observed the lives of more than 800 people and tried to understand, what specific positive values is formed the happiness and the joy of life.
Even before World War II, were observed hundreds of students, mentally and physically healthy. Some of them were from wealthy families and were secured, while
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