Once upon a time there were Lucy and Dusya. The same age, the same goals and dreams, common interests. Only Lucy was happy and believed that she would succeed, and Dusya was sad and was afraid that she would not succeed. At 20, they are both young and beautiful. And at 40, which of them will look better? No wonder that Lucy. Happy people always look younger. But why? And is it possible to learn happiness in order to prolong youth? Happiness is a condition in which we emotionally and physically feel a lift. There are two main incentives for happiness. The first is an external factor. A person sets himself certain material goals and expects that he will be happy when they are achieved. Perhaps this is a position with a high salary, or such benefits as a house, a car, business class flights, and more. And indeed, having received what he wants, he may experience a feeling of happiness. But usually not for long. Here we can draw such an analogy. When a child really wants a toy, having rec