All of these ghosts hold on to the negative energy they acquired during their mortal lives. This upsets the natural balance between good and bad energies on our planet. Moreover, it actually causes the spirit damage to remain here on the Physical Plane. Our bodies resonate at a frequency vibration that is in harmony with that of the Earth, but the Astral Body was not designed to remain on the Third Density without the physical protection of the mortal body. The longer they stay, the worse the damage.
("How It Works" continues below...)