The faculties of awareness divide horizontally into a higher level for mind and lower level for the physical senses.
For example, the faculty of mental vision can see imagined thought on a higher level and on a lower level can see out through the eyes.
It is something like bifocal reading glasses which divide one’s vision into a lower level for short range and an upper level for distance; or like wearing a diving mask with the lens half in the water so that one can see below the water and above the water at the same time.
If one does not differentiate between these two levels of vision, then they can easily and deceptively converge, and without us being aware of it, imagination can superimpose itself in a disruptive way over our vision of material reality. This can produce a tendency towards making imaginative incorrect assumptions.
This horizontal division exists between every mental faculty of awareness and every physical sense.
The emotions which stir with the thought that we imagine (according to our likes and dislikes of the thought) are also superimposed over our physical senses. This causes associated emotions to move along with the incorrect perceptions or assumptions.
Be sure to differentiate between thoughts and material reality, that is, between the faculties of awareness and the senses of the body, between the realm of mind and the physical world.
Both are real in their own sense, but we must be able to separate them, be able to keep them apart. Then later we can bring them together in a creative intelligent fashion, like a true artist does when he superimposes a mentally created image upon a canvass and with pencil traces over it, reproduces its colours with paints, and thus he materially manifests his imagination, or like an engineer does when he designs a physical structure, or like a mechanic does when he imaginatively traces the workings of a motor car to diagnose and locate the fault that fits its symptoms, or like the gardener does when she envisages the garden and plants it and nurtures it accordingly. But before we can blend mind and matter in a fine and perfect way and get correct and perfect results, we must be able to differentiate between mind and matter and be able to keep them apart.
Differentiate between what you see and what you imagine, between what you hear and your interpretation of it, between what you know and what you think.
Then as required, bring these levels of perception together, carefully and sensibly overlay them, and in doing so make good use of them.
But be aware that they are two separate levels, the mental and the physical.