In this study, the researchers propose a complementary methodological approach to determine how much participants may benefit from a psychoeducation program based on emotion-focused therapy (EFT). We designed the project as a multiple quantitative case study conducted with eight participants enrolled at a university in the Eastern Mediterranean region of Turkey. All participants were undergraduates in a psychological counselling and guidance program in the 2018–2019 spring semester. We collected research data through the repertory grid technique, which is a semi-structured interview method. We detected the distance between the elements (actual self, ideal self, me before the psychoeducation program started) by calculating the standardized Euclidean distance coefficient. Our findings showed that the distance between the elements of actual self and me before the psychoeducation program started was significant. Findings at the phenomenon level showed that the psychoeducation program applied in this study was successful. Findings indicated that therapeutic success could be measured through the idiographic findings at the individual level.