Shamanism

Step 1: Look straight ahead. It doesn't matter what is in front of you—anything from a sprawling vista to a wall will do. Just look.

  Step 2: Now imagine that everything in front of you is actually on a video screen. Pretend it's a two-dimensional representation of what you see. It looks the same, just as it would if you were looking at a high-definition screen that took up your whole view, but you know that it is just a screen.

  Step 3: Consider what is on the other side of that screen. Listen closely. Reach out with your feelings. Can you sense it? Is there something on the other side?

"Consorting with Spirits: Your Guide to Working with Invisible Allies" Jason Miller.