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HBR's 10 Must Reads on Mental Toughness Updated and Expanded (featuring "How to Stop Worrying About What Other People Think of You" by Michael Gervais)
Herminia Ibarra, Martin E.P. Seligman, Angela L. Duckworth, Michael Gervais, Harvard Business Review
es
Aprenda optimismo - Haga de la vida una experiencia maravillosa
Martin E.P. Seligman
es
La auténtica felicidad
Martin E.P. Seligman
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