Objectives This study aimed to investigate the mediating effects of emotional clarity and self-compassion in the relationship between internalized shame and interpersonal problems among adults aged 18 and older. Methods An online survey was conducted to measure internalized shame, interpersonal problems, emotional clarity, and self-compassion among adults aged 18 and older. A total of 443 participants (122 males and 321 females) were included in the analysis, which was performed using SPSS 29.0 and AMOS 26.0 statistical software. Results First, internalized shame, interpersonal problems, emotional clarity, and self-compassion were all found to be significantly correlated. Second, emotional clarity mediated the relationship between internalized shame and interpersonal problems. However, self-compassion did not show a significant mediating effect in this relationship. Third, a dual mediation effect of both self-compassion and emotional clarity was observed in the relationship between internalized shame and interpersonal problems. Conclusions The findings suggest that when adult clients report interpersonal problems, it is crucial to consider internalized shame and focus interventions on emotional clarity and self-compassion. Finally, the implications and limitations of this study are discussed.