An earthbound spirit will be either confused or can attempt to be controlling if the reason they have not passed over properly is because they are deliberately holding on to the earth plane. It is always earthbound spirits who ‘take over’ the physical body of a living person. They will do this because of a reluctance to leave this life. The physical body of another person provides a house for the spirit of such people to remain on the earth plane. The forced leaving of such a spirit has through time been known as an exorcism. The forced departure of an earthbound spirit is best left to an experienced psychic as often the earthbound spirit can be very reluctant to leave.
Spirit who have successfully passed over will never intimidate or deliberately upset the living. They come only to pass on messages and to let their loved ones know they are well.