If it were external - coming from someone from outside, then it would be useless, as it would not be permanent. What comes, goes. What appears, disappears. One bright, dazzling star of Consciousness is seen very secretly in between the eyebrows, and the unmanifested state of Consciousness is revealed. When all the three qualities are harmoniously together in one rhythym inside the Spinal Cord, then the supreme Being is revealed, going beyond the sentiments of discrimination between good and bad.
Peace be still.
The Keys of the Kriya Path To attain the tranquil state of breath in natural course by practicing Pranayam. To see in Yonimudra. The person must be honest and not a liar. The person should not smoke and drink. The person should read some portion of the Bhagavad Gita every day.