The purpose of this study was to evaluate the effect of a personalized reading instruction program with customized book selection for adolescents based on their personalities on their emotional intelligence and vocational maturity. The Enneagram personality test was utilized for selecting books based on the students' personalities and the effect of the reading instruction program was assessed using pre- and post-tests. The findings of the study revealed that the personalized reading instruction program was effective in improving emotional intelligence and vocational maturity for students with Ennneagram personality type 6. In addition, a qualitative analysis was conducted to investigate the participants' satisfaction level and their personal opinions. For future studies, independent research with a larger population and appropriate reading time based on each Enneagram personality type is suggested.