If I am not aware of it then it does not exist.

I agree with this from the existential perspective of any individual, this is true. but It does not mean that it isn't still working in the background. Just as a coding on a computer still continues to run in the background whatever way it was programmed, despite my lack knowledge of how to change/rewrite it or were its location even exist on the machine.

They are only relevant to persons who need to become more balanced. But thinking and talking about such ideas doesn't help, people need practical things to change their state of being.

I have to respectfully disagree with this. The subconscious and hypnosis are not just for people who need to become more balance, even though it is often used as a last resort when a person is really imbalanced because of the negative association that people connect hypnosis with; Just like @davidbrogan said so well with his positive healing experience.

ill use computer as an analogy again. It is true that a computer programmer can eliminate a virus using coding knowledge (becoming more balance) but he can do many other things with that knowledge. Creating practically any type of game, software, or even a program to run in the background.