Yes, it does!
Clinical Hypnotherapy allows you to access your subconscious mind which is where your issues reside. Many therapies set out to do this but work at the cognitive level, i.e. with those memories and beliefs that come into the conscious mind and so problems seated within the subconscious mind cannot be accessed easily or rapidly.
Changing beliefs within the subconscious mind allows deep seated, long term and positive changes to be made.
Together with EMDR, Clinical Hypnotherapy provides a powerful and comprehensive treatment for a wide range of psychological and some physical issues. I use a 'whole person' and 'whole life' approach to treatment to check if there are any, often seemingly unconnected, factors that may be driving or supporting the unwanted behaviour.