The next best thing to a hypnosis session with an experienced hypnotherapist may be listening to a self hypnosis cd, tape, or other recording medium. Although practice of self-guided self hypnosis (without a hypnotherapist or self hypnosis cd) can be very powerful it still requires you to think of what to do next and which way to turn.
Self guided hypnosis you might say is similar to driving a car. The driver of car can enjoy views but he/she must make decisions about direction and speed and where to go next.
On other hand listening to a self hypnosis cd can be like experience of passenger in car. The passenger can enjoy much more of view and not have to concentrate on anything particular. The passenger can go with view from car window or choose to drift away with his/her own thoughts.
Although it can be argued that suggestions and therapeutuc processes in a self hypnosis cd remain fixed, it is also a fact that listener will not remember everything in recording consciously. So on subsequent playings listener becomes aware of parts of recording that they do not hear consciously before.