Do you look fondly at the past, enjoy yourself in the present, and strive for future goals? If you hold these time perspectives simultaneously - and don't go overboard on any one of them - you're likely to be a happy person. A new study by San Francisco State University researcher Ryan Howell and his colleagues demonstrates that having this sort of "balanced time perspective" can make people feel more vital, more grateful, and more satisfied with their lives. Their findings are reported online in the Journal of Happiness Studies...

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