You must learn how to stop your internal dialogue at will. At the beginning of our association I delineated another procedure: walking for long stretches without focusing the eyes on anything. My recommendation was to not look at anything directly but, by slightly crossing the eyes, to keep a peripheral view of everything that presented itself to the eyes. If one keeps one's unfocused eyes fixed at a point just above the horizon, it is possible to notice, at once, everything in almost the total 180-degree range in front of one's eyes. That exercise is the only way of shutting off the internal dialogue.
The internal dialogue is what grounds us. The world is such and such or so and so, only because we talk to ourselves about its being such and such or so and so. The passageway into the world of sorcerers opens up after the warrior has learned to shut off the internal dialogue.

To change our idea of the world is the crux of sorcery, and stopping the internal dialogue is the only way to accomplish it. The rest is just padding. Nothing of what we do, with the exception of stopping the internal dialogue, can by itself change anything in us, or in our idea of the world. The provision is, of course, that that change should not be deranged. Therefore a teacher doesn't clamp down on his apprentice. That would only breed obsession and morbidity.