How Happy Can You Be? (2005)

Elenco

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  Line Hatland

  Narrator

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  Robert Biswas-Diener

  Himself

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  John Cacioppo

  Himself

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  Ed Diener

  Himself

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  Sonja Lyubomirsky

  Herself

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  Robert Schwartz

  Himself

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  Ruth Veenhoven

  Herself

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  Joar Vittersø

  Himself