This isn't really a spell, per se, and so it doesn't require divination or sacred space/magick circle. It's more of an exercise, designed to banish negativity from the body. I do it whenever I'm uptight or angry in order to get back into a rational state of mind.

This exercise really isn't religion-specific, and really isn't original, either. I've seen it everywhere, but not custom-tailored to Wicca. That's what my contribution is.

Directions:

1. Close your eyes, if you can.
2. Pray something like this, "I cleanse myself of negativity in the name of the Lord and Lady."
3. Inhale deeply.
4. Exhale slowly and completely, visualizing your negativity leaving your body with the air.
5. Repeat from Step 3 until you feel cleansed.

Good Luck and Blessed Be.