The best answer is that you will go as deep as you need to. Depth of the hypnotic state is an idea that used to be a focal point, but lately, the hypnosis community and hypnosis professionals have realized that depth (or not) has little bearing.
Here is an interesting fact. Hypnosis improves with practice. The more hypnosis one undergoes, the greater and easier one drops down into the altered state. It is a skill and like all skills.