To counteract someone stealing your mojo (and sanity)
Write the following on a piece of paper:
<Full Name> has no power over me <Your Full Name>
Thank you <God, Universe, Powers that be, etc.>!
Now place the paper in a spare tupperware container and fill it with water. Keep the paper submerged! In fact layer a few ice cubes on it to hold it down. Put the whole shebang in your freezer. Netflix and chill.
Depending on your time frame, or the power of the human in question, try to thaw and dry out the paper on a full moon. Sometimes this is a few weeks later. Sometimes it's a few years. Totally your call. Once it feels like the right time, burn it—the paper, not the tupperware—in a safe place.