Why are we unhappy? The author of this book, Raj Ragunathan, who has been studying the phenomenon of happiness for more than ten years, is convinced that the negative “thought mixer” is to blame for everything. After analyzing the human tendency to destructive internal dialogue, Raghunathan came up with 7 so-called “deadly sins against happiness.” By getting rid of them and observing the 7 commandments of happy people, derived by the author, you will find peace and lasting satisfaction with life. The book is also published under the title “Sadness of the fifth size. Why are we unhappy and how to fix it.”