You are now thinking that you are the mind or the body which are both changing and transient. But you are unchanging and eternal. That is what you should know.
This body itself is a disease. The root cause of it is ignorance. If for that ignorance the medicine called Jnana is administered all inherent diseases will disappear at once.”
The ego in its purity is experienced in intervals between two states or two thoughts. Ego is like that caterpillar which leaves its hold only after catching another. Its true nature can be found when it is out of contact with objects or thoughts.