Question: Can you give any clue or hint as to how we can recognize our thoughts as imaginations?

Babaji:

Whatever is in the mind is only imaginations. Because the mind exists only when it imagines. The pure existence of the Self is peaceful. Anything else is imaginations - because the mind cannot exist without thoughts. The only real experience is peace. But the mind cannot remain even on one thought. It constantly recognizes and makes judgments. When all this stops, then you experience your Existence.