Result

Paperback / softback
Bormans, Leo
The World Book of Happiness
€ 31,40
Paperback
Daeter, Ben
Het PERMA Model
€ 19,99
Paperback / softback
Harvard Business Review, Gervais, Michael, Duckworth, Angela L., Seligman, Martin E.P.
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)
€ 25,90
Boekstra