“When our subconscious mind accepts an idea, it begins to execute it.” Joseph Murphy
Isn’t this what happen in hypnotherapy? Our mind is in a state of heightened awareness and is very receptive to the positive suggestions planted by the hypnotherapist. It accepts without judgement or logical deduction. There is nothing standing its way.
Just the opposite, if the conscious mind is at the forefront, it will stand in the way for the idea to seep into the subconscious. It will form a barrier and thus keep most of the useful ideas and suggestions outside.