What do you think happiness is? Happiness is literally defined as the feeling that the body, mind, and spirit have achieved joyful satisfaction, a feeling of happiness that radiates from the heart, a sweetness that makes people laugh out loud with joy. Human beings are emotional creatures, and possessing emotions is the easiest way to feel full of happiness! People usually say: Happiness is an abstract feeling, but an American scientific research organization, which takes happiness as the purpose of research, concludes that happiness has nothing to do with age, gender and family background, and that it has nothing to do with age, gender and family background.