Existentially, there is only one relevant parameter: the degree of satisfaction the individual has with his life. From this will derive his happiness and his misery, in the most precise sense of both terms. Although very simple, and representing nothing more than the feeling of doing what one was born to do, satisfaction first requires awareness of individuality, free will and the ability to create. The rest is to continually affirm them, summing up existence itself in this act of affirmation. To do so is simply to be with awareness and plenitude, and in doing so the relevance of all other questions disappears. Those who experience satisfaction with their lives are filled with a healthy euphoria that drives them to more life. To the same extent, dissatisfaction generates the opposite impulse. Hence, in essence, happiness and misery are unrelated to comfort and refer above all to an inner state.