Background: Alcohol consumption among adolescents has become a significant psychosocial concern because it is associated with poor self-control, maladaptive emotional regulation, and susceptibility to negative peer influence. Objective: This study aimed to describe the implementation and outcomes of Cognitive Behavioral Therapy (CBT)-based individual counseling in reducing alcohol consumption behavior among adolescents. Methods: A qualitative case study design was employed involving one adolescent participant selected through purposive sampling. Data were collected through in-depth interviews, non-participant observation, counseling documentation, and CBT worksheets, and analyzed using thematic analysis with triangulation and member checking to ensure credibility. Results: The findings revealed that the CBT intervention successfully facilitated cognitive restructuring, strengthened self-control, improved emotional regulation, enhanced the ability to resist negative peer pressure, and reduced alcohol consumption behavior. The participant demonstrated more adaptive coping strategies and healthier decision-making following the intervention. Conclusion: CBT-based individual counseling represents an effective intervention for promoting sustainable behavioral change among adolescents with alcohol consumption behavior. Originality/Value: This case report offers novel empirical insights into the field of guidance, counseling, and adolescent clinical psychology by documenting the individual mechanisms of cognitive restructuring, emotional regulation, and resistance to peer pressure in mitigating adolescent alcohol consumption, an area still underexplored in qualitative literature. This study provides deep contextual perspectives and serves as a strategic reference for designing evidence-based counseling interventions and managing similar behavioral issues among at-risk adolescents.
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