This article is about the phenomenon of emotional intelligence. Emotional Intelligence (EI) first came to the world's attention in the mid 1990s with Dan Goleman's groundbreaking books 'Emotional Intelligence' and 'Working with Emotional Intelligence' - Goleman highlighted the importance of Emotional Intelligence in the workplace, showing how it can be used to predict performance and to identify high achievers. Most people have the potential to behave with emotional intelligence, but that so much of the time we do not, because of our interferences - internal interferences mostly resulting from false beliefs and limiting habits adopted in childhood and retained, unwittingly, in adulthood. Emotional intelligence is not a synonym for personality; it is about how we manage our personality. In order to act with emotional intelligence you need: a complex set of attitudes and skills, the skills can be learned and the attitudes can be adopted. Emotional intelligence is a predictor of performance and success. High emotional intelligence leads to effective selfmanagement and effective relationship management, which in turn lead to high performance and personal success. High emotional intelligence is demonstrated by the fundamental underlying attitude of acceptance of others and us, which enables effective and relationship management. Evolution of emotional intelligence is a compound process that lasts for a long period of time.