How long should a hug last? What is the use of crying? What can we do to change our luck? Does falling in love have any purpose? And why is heartbreak so inevitable? How do we learn to be afraid? At what age do we start to lie? Why are we envious? How many friends do we need to be happy? Can we avoid stressing unnecessarily? Why does a man care more about having his car scratched? And, beyond the thousand miracle diets, are there emotional tricks to lose weight? To these and many other transcendental and daily questions, Elsa Punset answers in this book, conceived as a "small guide to various routes" that travel through the geography of human emotions in order to make it easier for us to understand what is around us, to recognize it. importance of our relationships with others, discovering that what unites us much more than what separates us, finding effective ways of communicating, managing the relationship between body and mind, enhancing the flow of joy that we contain, organizing ourselves to achieve fix and meet our goals and help the human brain counter its innate tendency "to fearful and suspicious survival." Because, as Elsa Punset points out with transparent and simple words, to transform our lives and our relationships "we don't need as much as we think: in a light backpack there is room for what helps us understand and manage the reality that surrounds us" An indispensable guide to understand others and successfully manage in the universe of emotions.