In this conference Robert Waldinger, study director at the prestigious Harvard University, gives us the results, of the longest study ever conducted on happiness.
The study was conducted on hundreds of rich and poor people and over a period of 70 years. If like many people you think that happiness keys are money and fame you'll be surprised ...
So I let you discover the keys to maintain good health and happiness throughout our existence. Happiness will have no secret for you ... And do not hesitate to react in the lower comment box.