Clinical research has shown CBT to be an effective treatment for depression.
CBT looks at a person's mood in relation to thought patterns. Negative, unhelpful thinking affects a person's mood, sense of self, behaviour, and even physical state. The goal of Cognitive Behavioral Therapy is to learn to recognize negative patterns of thought, challenge them and replace them with healthier new ways of thinking.
CBT also looks at changing patterns of behaviour that result from unhelpful thinking. Negative thoughts and behaviour make an individual more prone to depression and when patterns of thought and behaviour are changed, the mood starts to lift.