Darrin M. McMahon
Darrin M. McMahon, Ph.D., is a professor of history at Florida State University and the author of Happiness, A History.
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Darrin M. McMahon, Ph.D., is a professor of history at Florida State University and the author of Happiness, A History.
Do you want to be happy? Then focus on making other people happy, argues Darrin M. McMahon.