Grounding or Earthing is a practice where you electrically reconnect with the earth and absorb the healing negative ions into your body.  This practice helps the body and mind to become more balanced.   There is a wonderful movie called, "The Earthing Movie", which can be found on either Amazon Prime or Netflix. It goes into a lot more detail about the science of grounding. 

This Podcast does contain a 15 minute guided meditation.  It is best to listen to this meditation outdoors, either sitting or lying on the earth.  If that is not possible, then simply use your imagination and visualize yourself somewhere in nature that resonates with you.