Inner meditation consists of three phases:

• 1st: Perfect Concentration
• 2nd: Perfect Meditation
• 3rd: Perfect Samadhi

One has to concentrate the mind on the Inner Master. One has to meditate on the majesty of the Inner Master. One has to talk with the Inner Master, until one hears his voice and converses ineffable things with HIM...

This is called Samadhi.

Concentration is one technique. On page 17 in The Voice of the Silence, H.P.B. says the following:

Before the Soul can hear, the image (man) has to become as deaf to roarings as to whispers, to cries of bellowing elephants as to the silvery buzzing of the golden fire-fly.

Before the soul can comprehend and may remember, she must unto the Silent Speaker be united just as the form to which the clay is modeled, is first united with the potter’s mind.

For then the soul will hear, and will remember.

And then to the inner ear will speak -

The Voice of the Silence...

So then, we must especially practice inner meditation during the sign of Leo. I advise my disciples to practice inner meditation during those moments in which they feel more predisposed to sleep. You must totally dominate the untamed horse of the mind.

You must control all possible reactions of the mind before the objects and sounds of the physical world.

The Inner Master is not the mind. The Inner Master is not emotion; the Inner Master is not the will; the Inner Master is neither the consciousness nor the intelligence.

The Inner Master is the Divine Witness. The Inner Master is the Being. The Inner Master is the Innermost; therefore, while immersed in deep inner meditation, say:

Not this, not this, not this.

I am He, I am He, I am He.

Be demanding with your Inner Master. He must teach you the most ineffable things. If your concentration is intense, then you will penetrate the marvels of the cosmos and will learn things which are impossible to describe with words.

Samael Aun Weor (excerpt from "Zodiacal Course")