Emotional intelligence can be defined as the ability to understand our own emotions and those of other people and to act in a useful way based on that understanding.
Emotional intelligence has four different aspects. It involves the ability to identify our own emotions and those of other people. It involves the ability to use our understanding of emotion to help us think effectively. It involves the ability to understand how different types of emotions are related to one another. Finally, it involves the ability to regulate our own emotions and to help other people deal with their emotions.
If we do not have emotional intelligence, it will be very difficult to have good relationships with other people. If we cannot understand our own emotions and we cannot regulate those emotions, we are likely to have problems dealing with people. We will, for example, get excessively angry or excessively jealous. If we cannot understand what emotions others are feeling, we will be unable to act appropriately. For example, we will not realize it when people are annoyed and we will make them even angrier.
In other words, if we do not have emotional intelligence, we will not be able to control ourselves or understand others well enough to have good relationships.