【正确答案】Everyone has the right to pursue happiness/ to the pursuit of happiness , yet definitions of happiness vary from person to person.(are quite individualistic.) Most people agree that happiness stems from good health, fulfillment of a desire and a successful career. As often happens, (is often the case), many people don't recognize (realize) what happiness really means (the real meaning of happiness) until they are distressed ( agonized/in agony.)