Premanand Maharaj Ji

What should I place in my mind during meditation, and what happens to the mind's restlessness?

The mind is a mirror: what you place before it shows

The mind is like a mirror and reflects whatever you place before it. Do sadhana, and the mind will become Brahm-like and filled with Brahm.

The mind is a mirror. Whatever object is placed before a mirror appears as its reflection.