What is CBT and How Does It Work?

Cognitive Behavioural Therapy (CBT) is one of the most effective, evidence-based forms of therapy available in the UK, and it was a psychiatrist called Aaron Beck who developed it back in the 1960s. Since then it has changed how we understand and treat mental health conditions, from anxiety and depression through to PTSD and eating disorders.

Traditional talk therapy may explore childhood experiences in depth. CBT does not. It looks instead at the link between your thoughts, your feelings and your behaviour. The principle behind it is simple. Change negative thought patterns and unhelpful behaviours, and you can improve both how you feel and how you manage daily life.

The CBT Model: Thoughts, Feelings, and Behaviours

CBT rests on one understanding. These three elements feed into each other:

• Thoughts: Your interpretations of situations, beliefs about yourself, and expectations about the future
• Feelings: The emotional responses triggered by your thoughts
• Behaviours: The actions you take (or avoid) based on your thoughts and feelings

Take one example. You think “I’m going to fail this presentation” (thought), so you feel anxious (feeling), and that leads you to avoid preparing properly (behaviour). The avoidance then reinforces your belief that you’ll fail, and a negative cycle is set.

Conditions CBT Can Help With

The National Institute for Health and Care Excellence (NICE) recommends CBT for a wide range of mental health conditions. In the UK you can reach it through the NHS, or you can pay for it privately. That makes CBT one of the most accessible forms of therapy.

Anxiety Disorders

CBT is particularly effective for a range of anxiety conditions:

• Generalised Anxiety Disorder (GAD): Excessive worry about everyday situations
• Social Anxiety: Fear of social situations and judgment from others
• Panic Disorder: Recurrent panic attacks and fear of future attacks
• Specific Phobias: Intense fear of particular objects or situations
• Health Anxiety: Preoccupation with having a serious illness

A 2021 meta-analysis published in the Lancet Psychiatry found that CBT was effective for treating anxiety disorders. Benefits held at 12-month follow-up.

Depression

CBT helps people with depression. Client and therapist work together to identify and challenge the negative thought patterns that keep low mood going, and they also look at behaviours such as social withdrawal and inactivity. That work can help break the cycle.

Research from the University of Bristol showed that CBT worked as well as antidepressants for moderate to severe depression, and that people who had it relapsed less often afterwards.

Obsessive-Compulsive Disorder (OCD)

A specialised form of CBT called Exposure and Response Prevention (ERP) is the gold-standard treatment for OCD. It involves facing feared situations gradually, while resisting the pull of compulsive behaviours.

Post-Traumatic Stress Disorder (PTSD)

Trauma-focused CBT helps people process traumatic memories and reduce symptoms such as flashbacks, nightmares and hypervigilance. For PTSD, NICE recommends trauma-focused CBT as a first-line treatment.

Other Conditions

CBT has also shown effectiveness for:

• Eating disorders (in conjunction with medical monitoring)
• Insomnia and sleep problems
• Anger management
• Chronic pain management
• Low self-esteem
• Relationship problems

What Happens in CBT Sessions

Knowing what to expect can reduce some of the anxiety about starting therapy. CBT is typically structured. It is collaborative as well, with you and your therapist working together as a team from the very first session.

The First Session: Assessment and Goal Setting

Your initial CBT session will focus on:

• Understanding your current difficulties and their history
• Identifying specific problems you want to work on
• Setting measurable, achievable goals for therapy
• Explaining how CBT works and what to expect
• Developing a shared understanding of your difficulties

Ongoing Sessions: Structure and Content

Typical CBT sessions follow a consistent structure:

• Check-in: Reviewing the week and any between-session tasks
• Agenda setting: Deciding what to focus on in the session
• Main content: Working on specific techniques or issues
• Homework: Assigning tasks to practise between sessions
• Summary: Reviewing what was covered and key learning points

Key CBT Techniques

Your therapist might use various techniques including:

• Thought records: Identifying and challenging negative thoughts
• Behavioural experiments: Testing beliefs through real-world experiments
• Activity scheduling: Planning enjoyable and meaningful activities
• Graded exposure: Gradually facing feared situations
• Problem-solving: Developing practical solutions to difficulties

CBT Through the NHS

In the UK, CBT is widely available through the NHS Improving Access to Psychological Therapies (IAPT) programme. Few forms of therapy are easier to reach.

How to Access NHS CBT

• Self-referral: Many IAPT services allow you to refer yourself online or by phone
• GP referral: Your GP can refer you to local IAPT services
• Waiting times: Vary by area but typically 6-18 weeks
• Number of sessions: Usually 6-12 sessions, sometimes more for complex cases

NHS vs Private CBT

NHS CBT is free. Private CBT offers advantages:

• No waiting lists: immediate access
• Choice of therapist
• Longer sessions (60 minutes vs 30-45 in NHS)
• More flexibility in scheduling
• Potential for longer-term work if needed

Finding a Private CBT Therapist

If you choose private therapy, find a properly qualified practitioner. Take that part seriously.

Essential Qualifications

Look for therapists accredited with:

• BABCP: British Association for Behavioural and Cognitive Psychotherapies (gold standard for CBT)
• BACP: British Association for Counselling and Psychotherapy
• UKCP: UK Council for Psychotherapy
• HCPC: Health and Care Professions Council (for clinical psychologists)

Questions to Ask

When choosing a CBT therapist, consider asking:

• What CBT training have you completed?
• Do you have experience with my specific difficulties?
• How many sessions do you typically recommend?
• What are your fees and cancellation policy?
• Do you offer online sessions?

Costs of Private CBT in the UK

Private CBT costs vary. It depends on where you live and on the therapist’s experience:

• London: £80-£150 per session
• Other major cities: £60-£100 per session
• Smaller towns: £50-£80 per session

Some therapists offer reduced rates for people on low incomes or students.

Is CBT Effective? The Evidence

CBT is one of the most researched forms of therapy, with extensive evidence supporting its effectiveness for various mental health conditions.

Research Findings

Key research findings on CBT effectiveness:

• A landmark study by the University of Bristol found CBT was as effective as antidepressants for treating depression, with lower relapse rates
• Research published in The Lancet showed CBT was effective for treatment-resistant depression when combined with medication
• Studies consistently show CBT is effective for anxiety disorders, with results maintained at follow-up
• For depression, anxiety disorders, OCD and PTSD, NICE recommends CBT as a first-line treatment

CBT vs Medication

For many conditions, CBT is as effective as medication. It has advantages too:

• Lower relapse rates after treatment ends
• No side effects
• Skills learned can be used throughout life
• Addresses underlying causes, not just symptoms

For moderate to severe depression, combining CBT with medication often produces the best outcomes.

Getting Started with CBT

Thinking about CBT? These steps will get you started:

1. Identify Your Goals

Think about what you want to get out of therapy. Specific, measurable goals guide treatment and make progress easier to track.

2. Choose NHS or Private

Weigh up the wait for NHS treatment against your need for support now. Going private? Research therapists thoroughly first.

3. Prepare for Your First Session

Before your first appointment:

• Think about your main concerns and when they started
• Consider what you’ve already tried
• Write down any questions you have
• Be prepared to discuss your goals for therapy

4. Commit to the Process

CBT requires active participation. The more you engage with homework and practise skills between sessions, the more you’ll benefit.

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• The History of Cognitive Behavioural Therapy (CBT)