This is because it is something that YOU want to alter and it is a specific. Remember, you are not asleep, you are aware of your surroundings, simply too interested in what's going on internally to be bothered. If at any time a Practitioner attempted to force their will on you by suggesting something you would not do normally, you would block the suggestion and simply not respond at all. This is because your subconscious doesn't try to please, or appease, or conform, it knows what is right for you and simply says yes or no. It can be used to explore regression, enhance skills, self- motivate, tap creativity and relieve stress.
Nothing is more powerful than imagination in tandem with effort.
A trained guide can help you access this powerful team and harness the potential in yourself. The bottom line is, you must WANT to achieve these goals. If you truly want to achieve mastery over a problem that you might have, this desire will be used by a trained and certified Practitioner to unlock your subconscious road blocks.