What Is CBT? Cognitive Behavioural Therapy Explained

Cognitive behavioural therapy, or CBT, is the most widely recommended talking therapy in the UK for anxiety and depression. It is practical, time-limited and based on a simple idea: that our thoughts, feelings and behaviours influence each other, and that changing any one of them can change the whole loop. Unlike some forms of therapy that focus on the past, CBT concentrates on what keeps a problem going now.

The core idea

CBT proposes that it is not the event itself that drives how we feel, but our interpretation of it. Two people can fail a driving test and respond completely differently, depending on what the failure means to them. The therapy helps you notice the automatic thoughts that sit under your emotions, test how accurate they are, and develop more balanced alternatives.

Thoughts, feelings and behaviour

The model works as a loop. A thought triggers a feeling, the feeling drives a behaviour, and the behaviour often confirms the original thought. If you think a social event will be a disaster, you feel anxious, you avoid it, and the relief you feel convinces you the event really was dangerous. CBT interrupts that loop at the point where you can act: the behaviour, and the way you examine the thought.

Component	What happens	Example
Situation	A triggering event occurs	A friend does not reply to a message
Thought	An automatic interpretation	"They are angry with me"
Feeling	An emotional response	Hurt and anxious
Behaviour	What you then do	You go cold and withdraw

What a course looks like

A course of CBT usually runs for six to twenty sessions of about an hour each. Between sessions you will have homework, such as keeping a thought diary or testing a prediction, because change happens between sessions as much as during them. The therapist is a collaborator rather than an adviser: they teach you to be your own therapist, which is why the benefits tend to last beyond the course itself.

What CBT is used for

CBT is well supported for depression, the anxiety disorders, panic attacks, obsessive-compulsive disorder, post-traumatic stress disorder and insomnia, where it is known as CBT-I. It is also used for health anxiety, phobias and chronic pain. It is not the right fit for every person or every problem, and other therapies such as counselling or psychodynamic work suit some people better.

Accessing CBT in the UK

You can self-refer to most NHS talking therapies services without seeing a GP first, through the local service website, or a GP can make a referral. Waiting times vary. Private therapists can offer faster access, and reputable online platforms provide structured CBT programmes. Whatever route you choose, check that the therapist is accredited, for example with the British Association for Behavioural and Cognitive Psychotherapies.

Combining with other help

CBT works alongside other forms of support. Many people use it with medication prescribed by their GP, with exercise, or with mindfulness practice. The skills fit naturally with our stress management techniques and with low mood self-help strategies, and our article on CBT for insomnia explains how the same model is adapted for the night-time.

Next steps

If CBT sounds like the right approach, our overview of anxiety disorders helps you identify which condition you would be working on, and our guide to mental health support in the UK walks through how to access NHS services. For a taste of the CBT style before you commit, try the practical ideas in our low mood self-help guide.