Spare's Banishing Ritual
(I'm not sure where I picked this up. It's excellent, and usefully simple. ~ErisX)

This ritual was taught by Spare to Frater O.T.L., who passed it on to Stephen Mace. It does not appear in any of Spare's published writings. Here is Mace's description :

"To begin, close your eyes and imagine a vertical line of white light, passing from the nadir to the zenith right through the point of view behind your eyes. Next, imagine a spot of light about two feet in front of this point of view. With this spot trace a horizontal circle around your head. Then trace an ellipse by running this spot up to the top of your head, down your back, under your feet, and up again to the top of your head. Then trace another ellipse from the top of your head down one side, under your feet, and
up the other side to the top of your head.

"When you're finished, your point of view should be in the middle of a cage resembling an egg-shaped gyroscope.

"With your fortifications now in place, you may clean out your imagination. To do this turn the line you first visualized into a pillar of fire and cause it to expand outward through your three rings. As it does, cast images of any persistent thoughts or fantasies into the flames and watch them burn until there is nothing left but three glowing white rings.

"Besides flushing out your mind before and after any magical operation, banishing is your first defense against obsessive thoughts from within and any kind of psychic attack from outside. It also has the side benefit of hardening the aura, forming a psychic shell that will keep your consciousness together and deflect the piercing intrusions of the external world."