Shen is the Third Treasure of the body (& tonic herbalism) that is loosely translated as our Spirit or higher consciousness. Other ways we can explain what Shen alludes to are: the mind, our personality, joie de vivre (joy of living) or the soul.
The mind is essentially a means for our Shen / soul / true personality / to be clearly grounded & expressed & reflected upon within the body. With a smooth flow of our Shen from Heaven into the body, the mind is clear, crisp & quiet in its role. When the flow is interrupted the mind loses its purpose & becomes chatty, polarising & erratic.
P.S Shen is coming.......