Someone once asked a question: What is the most essential thing that humans pursue? The answer with the highest votes is: happiness. The most scientific answer is: relationships. The secret to our happiness is hidden in our relationships. Ever since our birth, we begin to create all kinds of links and relationships with the world. In this book, I will teach you how to understand your relationship with yourself from the perspective of psychology, how to deal with your relationship with others, and gain insights into your relationship with the world. Only when you cherish yourself will you have dear lovers, friends and world.