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Happy Life 1- If you want to live a long, rich life, one of the best things you can do is to fill your life with happy feelings. Barbara Fredrickson, a University of Michigan psychologist, studied the causes of happy people’s longer …

Happy Life 1- If you want to live a long, rich life, one of the best things you can do is to fill your life with happy feelings. Barbara Fredrickson, a University of Michigan psychologist, studied the causes of happy people’s longer …