Field and knower of the field

Now lord krishana describes you know 'me' not body but ultimately truth and you are also 'That'but due to illusion you do not know.Lord krishana says that the knowledge of the field and knower of the field is real knowledge according my views.As has been suggested by Lord Krishana.
You can see in yourself.Suppose you are running.your breath is very fast,your legs and body is tired.but you can see in yourself Someone who knows of the breathing and tiredness.you are studying but there is someone who knows of all your activities of studying.
There are three stages in 24hours.Vdanta called it jagrit[awakening]suvpon[dream]and suspti[deep sleep].There is someone who knows to the activities of your awakening.you says to day my body is upset.now in awakening some part of you knows everything.
second is dream.you went to sleep.your eyes were closed.but there was someone which did not sleep.In morning you describe like this.i saw a lion in my dream.I saw a big house at night.the dream was according to your tendencies.but there is someone who describes in the morning.