“If it looks clockwise, then you’re using more of your right brain. Counter-clockwise and you’re using you’re left.”
Concentrate and try to spin it the other way, it’ll work. Think the image is changing by itself? You have more control than you think, it just takes practice. Look at the shadow of the lady and use logic to figure out which way’s spinning. Convince yourself it’s not what you think and she’ll start spinning the other direction!
