A sentimental, literary novel, full of humour, passion and melancholy, 'La felicitat dels dies tristos' tells the story of Tabou, a university student marked by a family history as intense as it is complicated. Tabou falls in love with Elisenda, his beautiful, full-of-life classmate, who soon reveals that he can never have her. What might be a reason for pain and sorrow becomes instead a fascinating challenge and an invigorating experience that leads Tabou to discover, just as he is about to hit rock bottom, the best things in life: self-esteem, family loyalty, the generosity of friends and the joys of happiness.