Crystal Wind™

This is an optical illusion. It's your own eye that makes the circles move. To discover this, stare at one of the circles by itself. This is a good analogy for the way the subconscious mind works. It can make something seem real, like a persistent pattern, but you can stop it! See the illusion ... the pattern is revealed. Turn on the light and the darkness goes away ... this takes some persistence and a willingness to conquer fears.

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http://www.bemyastrologer.com/illusions.html