An 85-year Harvard study on happiness found the No. 1 retirement challenge that 'no one talks about

In 1938, Harvard researchers embarked on a decades-long study to find out: What is the secret to a happy life, especially in retirement? They found a common theme about the biggest challenge retirees face that is rarely talked about.

An 85-year Harvard study found the No. 1 thing that makes us happy

An 85-year Harvard study on happiness found the No. 1 retirement

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