International Journal of Research and Review Vol.7; Issue: 9; September 2020 Website: www.ijrrjournal.com Research Paper E-ISSN: 2349-9788; P-ISSN: 2454-2237 International Journal of Research and Review (ijrrjournal.com) 194 Vol.7; Issue: 9; September 2020 The Development and Implementation of “Modul Saku” Rational Emotive Therapy (RET) for Guidance and Counseling Students Jahju Hartanti 1 , Lucky Nindi Riandika Marfu’i 2 1 Department of Guidance and Counseling, Faculty of Pedagogy and Psychology, Universitas PGRI Adi Buana, Surabaya, East Java, Indonesia 2 Department of Guidance and Counseling, Faculty of Education and Social Sciences, Universitas Indraprasta PGRI, Jakarta, Indonesia Corresponding Author: Lucky Nindi Riandika Marfu’i ABSTRACT The purpose of this reseach is to develop a “Modul Saku RET” which will be implemented to reduce student negative self-concept. This research used research and development method. The development of the module still requires further dissemination. The results of this study are “Modul Saku RET” that can be used as a reference for prospective counselors and then counselors in providing RET to overcome negative self-concept problem or other problems. In this module, RET model is explained in 2 terms that are vigorous disputting and rational role playing. In the RET approach, it is necessary to emphasize the dispute skills (debating) performed by the counselor to sensitize the counselee. The conclusion of this study showed that “Modul Saku RET” are appropriate to be used as RET implementation reference. This module has received a certified by Hak Kekayaan Intelektual (intellectual property rights) from Direktorat Jenderal Kekayaan Intellectual and has a good validation. Keywords: “Modul Saku”, Rational Emotive Therapy (RET), Prospective Counselor, Self Concept INTRODUCTION The development of several counseling techniques in the Guidance and Counseling scene occurs rapidly. The condition is triggered in line with the development of learning media in Guidance and Counseling as well as the ability or potential of counselors in Indonesia. Some considerations in developing Guidance and Counseling learning media are the effectiveness and efficiency of the media used as well as the use of developed media. The development of Guidance and Counseling of current media demands conformity to 21st century education. 21st century education emphasizes the involvement of critical, creative, collaborative, and communication skills. It is the job of counselors or educators in developing Guidance and Counseling learning media to be more communicative and interesting to learn. One of the counseling techniques is the consideration of researchers in the development of Guidance and Counseling learning media based on the role of system support. The form of system support participation in Guidance and Counseling conducted by educators in universities is the development of Guidance and Counseling media in the form of RET counseling “Modul Saku” that will be developed in this research. RET Counseling (Rational Emotive Therapy) is one of the counseling one of the cognitive-based counseling approaches that aims to change and reduce the irrational beliefs of individuals related to emotions from within the individual. Such irrational beliefs are converted into rational beliefs that will have a positive impact on an individual's emotional state. Essentially