Motivation is a complex process with multiple contributing factors. The main goal of this study was to explore achievement motivation and its relationship with emotional intelligence in adolescents. The research group consisted of 145 university student respondents in Slovakia with an average age of 21 years with 71 percent women and 29 percent men. EI was measured with the Trait Emotional Intelligence Questionnaire – Short Form (TEIQue-SF); the level of achievement motivation was measured by the Achievement Motivation Questionnaire (Leistungsmotivationsinventar, LMI). The primary study discussed in this chapter utilized correlation and regressive analysis. The strongest significant correlations were in the case of the global level of trait EI and success confidence, flexibility, and global achievement motivation. Medium correlations were found between the trait EI and perseverance, dominance, fearlessness, internality, self-esteem, willingness to learn, and self-control. Regression results support the hypothesis that trait EI is a significant predictor of achievement motivation. The findings suggest that the intelligent use of emotions is important in the process of the motivation to achieve, and that difficulties in emotionality can impact one’s success and goal attainment.