If we can divide our life into two elements we can say, that the whole life contains happiness and disappointment. Disappointment Disappointment is the feeling of dissatisfaction that follows the failure of expectations to manifest. It is a source of psychological stress. The study of disappointmentвЂ”its causes, impact and the degree to which individual decisions are motivated by a desire to avoid itвЂ”is a focus in the field of decision analysis, as disappointment is one of two primary emotions involved in decision-making. Etymology Disappoint is traced by etymologists to the Middle English disappointen by way of the Old French desapointer. In literal meaning, it is to remove from office.Its use in the sense of general frustration traces to the late 15th century, and it first appears recorded in English as an emotional state of dejection in the middle 18th century. Psychology Disappointment is a subjective response related to the anticipated rewards.The psychological results of disappointment vary greatly among individuals; while some recover quickly, others mire in frustration or blame or become depressed A 2003 study of young children with parental background of childhood onset depression found that there may be a genetic predisposition to slow recovery following disappointment While not every person responds to disappointment by becoming depressed, depression can almost always be seen as secondary to disappointment/frustration. "disappointment effect". This disappointment effect has been challenged since the mid-1990s by researcher Suzanne C. Segerstrom. Her findings suggest that, rather than being unable to deal with disappointment, optimists are more likely to actively tackle their problems and experience some immunity compromise as a result. In 1994, psychotherapist Ian Craib published the book The Importance of Disappointment, in which he drew on the works of Melanie Klein and Sigmund Freud. Craib offered as two examples litigious victims of medical mistakes, who once would have accepted accidents as a course of life, and people suffering grief following the death of a loved one who, he said, are provided a false stage model of recovery that is more designed to comfort bereavement therapists than the bereaved. There are two tragedies in the life. The first вЂ“ when we want something and not get it. And the second вЂ“ when we get what we want, but it proves that it is useless for us.