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Psychological therapies

Cognitive behavioral therapy (CBT)How it works, what happens in a session, and why it is used for depression, anxiety and addiction

Reviewed by: Dr. Mahmoud El-Sawy Last updated: October 1, 2026 6-minute read
The short answer

Cognitive behavioral therapy is a talking therapy that helps you notice the automatic thoughts that drive your feelings and behavior, then test and change them, and learn practical alternative behaviors. It is structured and time-limited, and the UK's National Health Service says the number of sessions is usually between 5 and 15. It is among the recommended treatments for depression, anxiety, obsessive-compulsive disorder and post-traumatic stress disorder, and is used in addiction treatment and relapse prevention.

  • It focuses on present problems, not only on analyzing the past.
  • Homework between sessions is an essential part of its success.
  • It can be combined with medication when the patient needs it.

“Every time I feel like a failure I stay home, and the longer I stay home the more of a failure I feel.” This sentence sums up what cognitive behavioral therapy treats: a cycle in which thoughts, feelings and actions feed one another. The core idea is simple, but applying it takes practice and a qualified therapist.

What is cognitive behavioral therapy?

Cognitive behavioral therapy, abbreviated CBT, is a type of talking therapy based on the idea that the way we interpret situations affects our feelings and actions, and that some of these interpretations are automatic and distorted without our noticing. The therapist does not try to convince you to think positively; instead, they teach you to examine a thought as a doctor examines a symptom: what is the evidence for it? What is the alternative explanation? What happens if you act differently?

It differs from therapies that focus on exploring childhood for many years: it deals mainly with current problems, has clear agreed goals, and progress is measured step by step.

How does cognitive behavioral therapy work?

The therapist explains to the patient that suffering often comes not from the situation alone but from a repeating cycle that can be drawn on a sheet of paper:

  1. 1
    The situation

    An ordinary event: a message that has not been answered, a look from your manager, or a gathering with old friends from your using days.

  2. 2
    The automatic thought

    A quick, untested interpretation: “He must be upset with me,” “I can't do it,” “One cigarette won't make a difference.”

  3. 3
    The feeling and the body

    Anxiety, sadness or craving, with palpitations, tension or insomnia.

  4. 4
    Behavior

    Avoidance, withdrawal, substance use or procrastination, which brings temporary relief.

  5. 5
    Result

    The temporary relief confirms the original thought, so the cycle returns stronger next time.

Infographic: the cycle of thought, feeling and behavior: situation → automatic thought → feeling and body → behavior → outcome
Cognitive behavioral therapy steps in at the thought and at the behavior to break the cycle.

The “cognitive” side works on the link of thought, and the “behavioral” side works on the link of action, such as gradual exposure to feared situations or scheduling enjoyable activities for someone with depression. Changing either link weakens the whole cycle.

What conditions does it treat?

According to the UK's National Health Service, cognitive behavioral therapy is recommended for conditions including depression, anxiety of various types including social anxiety and obsessive-compulsive disorder, post-traumatic stress disorder, and eating disorders, and as part of the treatment of bipolar disorder and personality disorders. It also helps with sleep problems, chronic pain and alcohol and drug problems. A study published in 2012 reviewed hundreds of meta-analyses and found that the strongest evidence for its effectiveness concerns anxiety disorders, stress, anger problems and bulimia.

Cognitive behavioral therapy in addiction treatment

In addiction treatment, the patient learns to draw a personal map: which situations, people and feelings come before substance use? Then they practice specific skills: refusing an offer, riding out a craving until it passes, solving problems instead of escaping them, and spotting the thoughts that justify “just one time”. A study published in 2009 analyzed the results of 53 randomized trials in adults with alcohol or drug addiction and found a small but consistent positive effect, clearest with cannabis and fading gradually over the months. That is why it is used together with other treatments rather than alone, and is a core part of plans to prevent relapse.

What happens inside a cognitive behavioral therapy session?

The journey starts with an assessment in which the therapist identifies the problem and the goals. In a typical session, what has happened since the last session is reviewed, then a difficult situation that really happened is chosen and analyzed: what did you think? What did you feel? What did you do? Then a small experiment or task is agreed for before the next session. The NHS stresses that practice between sessions is essential for the therapy to work, and you may be asked to record your progress in a notebook or form.

The best-known tools of cognitive behavioral therapy

Thought record

Writing down the situation, the thought and the feeling, then looking for evidence for and against.

Behavioral experiments

Testing the thought in reality instead of arguing with it in your head.

Behavioral activation

Scheduling enjoyable and useful activities to break the inertia of depression.

Gradual exposure

Facing feared situations step by step without escaping.

dealing with cravings

Skills for letting the wave of craving pass without giving in to it.

Problem-solving

Breaking a big problem into small, doable steps.

Does cognitive behavioral therapy suit everyone?

The therapy requires active participation and willingness to experiment, and it can be hard at first because it asks you to face what frightens you. It is not suitable on its own for someone with acute psychosis or an acute suicidal crisis before stabilization. In cases of intense emotional swings and self-harm, the doctor may prefer dialectical behavior therapy, which is a developed version of it. It can be delivered individually or in a group.

When and where to begin?

If symptoms disrupt your work, relationships or sleep for more than two weeks, or substance use returns whenever you face stress, that is a signal to seek an assessment. At Eradah, cognitive behavioral therapy is used within residential treatment and outpatient treatment, and is combined with medication when addiction and mental illness occur together in dual diagnosis.

Frequently asked questions

Frequently asked questions about cognitive behavioral therapy

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What is cognitive behavioral therapy?

A talking therapy that helps you notice and test automatic thoughts and change the behaviors that keep the problem going.

How many sessions of cognitive behavioral therapy are there?

The NHS says it is usually between 5 and 15 sessions depending on the problem, and may be more if symptoms do not improve.

Does cognitive behavioral therapy treat depression without medication?

In mild to moderate depression it may be enough on its own, while severe depression often needs it combined with medication, at the doctor's decision.

Is cognitive behavioral therapy useful in treating addiction?

Yes, it helps identify triggers for substance use and learn skills for facing cravings and preventing relapse, and it gives better results when combined with other treatments.

What is the difference between cognitive behavioral therapy and traditional psychotherapy?

Cognitive behavioral therapy is structured and time-limited and focuses on the present and practical skills, while some other therapies focus on exploring the past and relationships.

When do the results of cognitive behavioral therapy appear?

Many people notice gradual improvement within the first weeks if they keep up the practice between sessions.

Can I apply cognitive behavioral therapy on my own?

There are self-help books and programs based on it that help in mild cases, but moderate and severe cases need a qualified therapist.

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