In what is known as affective forecasting, we like to predict how we’ll feel about something in the future. Unfortunately, our predictions are wildly wrong. We’re generally terrible at predicting what will make us happy.We believe attaining something will give us lasting happiness, when others who get what we wanted are no happier in the long run. Or, we think we want one thing if put in a certain situation, but when we’re actually there, we want something completely different.