Cognitive Behaviour Therapy (CBT) is a talking therapy. It can help people who are experiencing a wide range of mental health difficulties. What people think can affect how they feel and how they behave. This is the basis of CBT. During times of distress, people think differently about themselves and what happens to them. Thoughts can become extreme and unhelpful. This can worsen how a person feels about themselves and others around them. They may then behave in a way that prolongs their distress.