This study explores how emotional intelligence (EI) impacts stress, relationships, adjustment, and leadership among young adults aged 18 to 28. Around 200 participants from India were in the study, with an equal number of men and women. The results showed some clear patterns: individuals with higher emotional intelligence tended to experience less stress, showing that being emotionally aware and in control helps with managing pressure. Those with higher EI also showed healthier relationship styles, being more securely attached and less likely to avoid emotional closeness. Emotional intelligence was also strongly linked to better leadership qualities, especially in areas like self-awareness and having strong values. Interestingly, the study found no meaningful connection between EI and overall adjustment, which could be influenced by cultural or environmental factors. The results show that emotional intelligence helps young adults handle stress, improve relationships, and become better leaders. The results suggest doing more culturally sensitive research and adding EI training in schools and workplaces.