Cognitive Behavioural Therapy (CBT): Evidence-Based Treatment for Mental Health

Cognitive Behavioural Therapy (CBT) is a structured, time-limited, evidence-based psychological therapy that focuses on identifying and changing unhelpful thought patterns (cognitions) and behaviours that maintain emotional distress. It is based on the principle that our thoughts, feelings, physical sensations, and behaviours are all interconnected — and that by changing how we think and behave, we can significantly improve how we feel.

CBT has the strongest evidence base of any psychological therapy across multiple conditions: depression, generalised anxiety disorder (GAD), panic disorder, social anxiety, phobias, OCD, PTSD, health anxiety, insomnia (CBT-I), chronic pain management, and bulimia nervosa. It is recommended as first-line treatment by NICE (UK), APA (US), and WHO guidelines. CBT is typically delivered in 8–20 sessions, each lasting 50–60 minutes, with homework exercises between sessions to practise skills in real-life situations.

In Korea, CBT is available through private psychology and psychiatry clinics — concentrated in Seoul districts such as Gangnam and Jongno, as well as in other major cities — and through community mental health welfare centres (정신건강복지센터) operated under the Ministry of Health and Welfare in every district nationwide. University hospital psychiatry departments and a growing number of English-language-friendly clinics in Seoul also provide CBT for international residents. For insomnia specifically, CBT-I (Cognitive Behavioural Therapy for Insomnia) is considered superior to sleep medication in the long term and is available through sleep clinics.