Experts emphasize the importance of insight as essential component for subjective well-being, yet the mechanisms underlying its development remain unclear. While selfreflection is considered a potential predictor of insight, research suggests that its effects may depend on other factor, with emotional schemas being one possible moderator. Given this, the aim of this study was to examine the relationships between self.reflection, insight, emotional schemas and subjective well-being, as well as to investigate the role of negative emotional schemas as a moderator in the relationship between self-reflection and insight, where insight serves as a mediator between self-reflection and subjective well-being. The study included 203 participants aged 18 to 29 years, whose responses were collected online. Data were collected regarding participants’ levels of self-reflection, insight, subjective well-being, and emotional schemas. Self-reflection and insight were measured using Self-Reflection and Insight Scale (SRIS); subjective well-being was assessed through Diener’s Subjective Well-Being Scales, including Satisfaction with Life Scale (SWLS), Flourishing Scale (FS) and Scale of Positive and Negative Experiences (SPANE); while emotional schemas were evaluated using Leahy’s Emotional Schema Scale II (LESS II). The results indicated that self-reflection was not significantly associated with any of the examined constructs. Negative emotional schemas and insight were strongly negatively correlated, with higher levels of negative emotional schemas significantly predicting lower levels of insight. Insight was significantly positively correlated with subjective well-being, with higher levels of insight predicting greater subjective well-being. Negative emotional schemas were negatively associated with subjective well-being. The direct path between selfreflection and subject subjective well-being was not significant, nor was the mediation effect via insight. Furthermore, the interaction between self-reflection and the negative emotional schemas were not significant, thereby failing to confirm the moderating role of negative emotional schemas. Finally, the model of moderated mediation, which proposed that selfreflection would predict subjective well-being through insight, depending on the levels of negative emotional schemas, was not supported. In conclusion, the results of this study highlight the importance of insight and negative emotional schemas in understanding subjective well-being, while the role of self-reflection remains unclear. The model suggests that self-reflection does not influence subjective wellbeing through insight, depending on negative emotional schemas. Future research should explore the variable of self-reflection and additional factors that may shape these relationships.