Hypnotherapy uses a variety of techniques to help the subconscious change.
Guided Imagery: this is when a scene is described such as sitting in a garden or on the edge of a lake. The aim is to help relaxation and focus the mind. Depending on what is being treated, this guided imagery may take the form of a "film". For example if the problem is being afraid of driving then the script would guide you through driving the car with it all going well. If you are an athlete, it may be visualising yourself winning the race.
Metaphor and Suggestion: the English language is full of metaphors - a word or phrase being applied to an object or action to imply a resemblance. Examples are: he is like a bull in a china shop. Fairy tales are also metaphorical stories. By using metaphor in either short sentences, setting a scene or a short story, the subconscious is more likely to accept the change. Positive suggestions are also made to replace negative beliefs.
Hypno-analysis: every symptom has a cause. By using a combination of techniques under the hypnotic state we are able to uncover the incident, or the emotions that accompanied the incident, deep in the subconscious. Once we have this knowledge we can then alter the perception of the memory.
Regression: this is a technique used to go back through your life, often as far as childhood, to access memories that have been buried. This may be done through a variety of metaphors and guided imagery.