Emotional intelligence (EI) is the ability to recognise, understand and manage one’s own emotions as well as to perceive and influence the emotions of others. High EI involves self-awareness, self-regulation, motivation, empathy and social skills-five components popularised by psychologist Daniel Goleman. In coaching, EI is essential because it shapes communication, trust and the effectiveness of the coaching relationship. Coaches with high EI can stay present, listen deeply and respond to clients without judgement, while clients with growing EI learn to identify and manage their feelings, leading to more productive sessions. Conversely, low emotional intelligence can lead to misunderstandings, emotional outbursts or avoidance that derails progress. Developing EI helps clients regulate emotions, empathise with others and make decisions aligned with their values. Coaches often integrate EI assessments, reflective exercises and mindfulness practices to build awareness and self-regulation. Because EI underpins effective leadership, collaboration and resilience, it is a core competency in many coaching models and a focus of leadership development programmes.