ISBN-13: 9780232533590 / Angielski / Miękka / 2018 / 224 str.
ISBN-13: 9780232533590 / Angielski / Miękka / 2018 / 224 str.
The creator of The Happiness Course explores what it means to be happy, why being happy is so important to us, and what it may require from us to attain happiness.