Zen Biology Lesson for Enlightenment

The heart pumps blood all by itself without you doing it. The lungs breathe air all by themselves without you doing it.
The brain associates concepts with other concepts all by itself.

The mind is thinking (randomly babbling) completely on its own.

Let's look inside for just a brief minute...
How long can you keep the mind completely silent?
If you try to stop thinking, it just starts right back up again.
Words, verbalization, thoughts, thinking, and emotionalism are completely automatic.
You can't stop it by controlling it, but you can (eventually) stop it by non-judgmentally watching it.
The brain works completely by itself.
It has nothing to do with "you" doing it.
This means that you are not the doer of deeds, nor the thinker of thoughts.
The mind/body is an "it", not a "me".

The brain's thoughts and body's actions are just the result of cells doing work.

We are not the physical body/mind and its senses.
We are not the mind and its automatic rambling thoughts.

We are the still, conceptless, silent Awareness that is aware of them.
We are the Awareness that is watching the body/mind's automatic functioning.
We are the Silent Formless Observer.
We are the Life/Consciousness/Awareness that is simply aware of Itself as existing.

We have mistakenly identified ourselves as being the physical mind/body.
We have mistakenly identified ourselves with form.
It was an erroneous belief all along.

The real "you", the Silent Aware Mind, is not confined to a brain, or anything else.
It's Infinitely Everything beyond physicality.
It's the (formless) Allness of Existence.
It's No-Thing, yet Infinitely Everything.

But thinking about that won't help you realize/experience that.
You have to stop identifying with thoughts altogether to realize that.