Focus your attention on the center of your forehead. Visualize that there is a slow but steady swirl of white light there. This particular white light is very soft and gentle. Visualize that the white light above your forehead is slowly moving in a clockwise direction.
Then visualize that the swirling white light is slowly expanding. As it does, the white light begins to encompass the other portions of your body. Imagine the soft white light expanding in a circular swirling motion until your entire body has become lost in it.
Feel that the room you are meditating in is becoming filled with swirling white light. Visualize that the light is expanding beyond the room you are in to encompass the building or area in which you are located. Then imagine that the white light is expanding even farther, encompassing all of the area for miles around you. Finally, visualize the soft white light continuing to expand as it gently swirls around, until it has filled the earth, the sky, the universe, and all of infinity.
Let go. Allow yourself to merge with the slowly swirling calm, peaceful white light. In this timeless light, there is no yesterday, no tomorrow, there is no future or past. Your mind is calm and relaxed. All that exists is swirling white light, and you have become part of that light. Meditate and continue to visualize the swirling white light, experiencing peace and inner stillness, until your meditation session has ended.
-Excerpted from Snowboarding to Nirvana by Frederick Lenz