One of the development tasks of adolescence is preparing career choices. Various methods have been carried out by authors in order to create an appropriate method to help adolescents. In this article, the authors will examine the psychoeducational groups with self-instruction techniques in improving career decision-making skills, self-esteem, and self-efficacy. The authors conducted a quasi-experimental of the pretest-posttest with group control to determine the impact of the intervention on these variables. The instrument used to obtain data is the psychological scale of career decision making, self-esteem, and self-efficacy, all of which have been tested for validity and reliability. The data collected was then analyzed with MANOVA and t-test. The results show that career decision making (F = 52.28, p <0.05), self-esteem (F = 28.10, p <0.05), and self-efficacy (F = 34.70, p <0.05) can be improved using psychoeducational groups with self-instruction techniques. The implications for the practice of guidance and counseling will be discussed.