Emotion and interaction.

When we feel emotion, we must understand, that our emotions are singular to us, at that moment. Or, in other words, we must understand, that in our situation, we are not interacting with the situation, exactly like the others are. Perhaps, when I come to comprehend this situation much deeper, I further realize, that if I am unhappy in the situation, then I am the only one who may be. When a person feels unhappy, and is aware of the unhappiness, then the unhappiness is misplaced. What is the cause of this unhappiness, which we feel is misplaced? Is it ourselves, as being unhappy in this situation is not constant for everyone? How should I deal with the situation?