White Light Exercise
There are a number of variations of this exercise, each more or less tailored to a particular belief system or to your elemental affinity. The simplest version is to bring up the image of a blazing white light and surround your body with it, up to arm’s length around you. You can “shower” yourself in it, or “cocoon” yourself, and it is best to practice with it on a daily basis so that you can bring it to mind whenever you feel anxious or threatened.
Some may find this exercise to be overly energizing. Blue light works equally well, and I have found that golden sparkles in the image, or a “champagne” color works better. Experiment until you find the color that works best for you.