Emotional intelligence helps in avoiding passive aggressiveness and promoting emotional clarity. For example, anger is a healthy emotion. It indicates a discomfort we are feeling and guides us into setting healthy boundaries for ourselves, without destroying our relationships. So one of the goals of EQ is identifying what emotions we are feeling and fostering them in a conductive way, instead of blocking them until they bottle up to the point of exploding.
Emotional Regulation as one of the top skills for leaders. Creating self-awareness and learning to recognize what we are feeling and giving it a name starts to create emotional regulation.
Emotional regulation in a nutshell, is the self-awareness and effective management of our own emotions and how these project onto others.