The mind is not something abstract
It is a tangible object that is seen in meditation
The brain is not something abstract
It is a tangible object that is seen in meditation
The chitta is not something abstract
It is a tangible object that is seen in meditation
The ego is not just a concept
It is a tangible object that is seen in meditation
The list goes on
First calm them
Then see them as a object as real as a table or amla
Then purify it
This is yoga
No theory
No discussion
Purely practical
Arduous is the task
Purity a must