You can cleanse your home of negative energy with sage or sweet grass. You can also perform a smudging ceremony, although this is best done by respectfully approaching a spiritual First Nations person. You can also perform a salt ceremony to protect your home. Lastly, you'd want to meditate regularly, psychically surround yourself in white light, and tell any negative energy that it does not have your permission to interfere with your life.
Spiritualists believe that phenomena produced by mediums (both mental and physical mediumship) are the result of external spirit agencies. The psychical researcher Thomson Jay Hudson in The Law of Psychic Phenomena (1892) and Théodore Flournoy in his book Spiritism and Psychology (1911) wrote that all kinds of mediumship could be explained by suggestion and telepathy from the medium and that there was no evidence for the spirit hypothesis. The idea of mediumship being explained by telepathy was later merged into the "super-ESP" hypothesis of mediumship which is currently advocated by some parapsychologists.
This technique, rather than using all types of external energy to appear as an apparition, those in Spirit are able to use MY energy, the energy of my brainpower and thought energy, to appear to me. It’s way easier, and since I am with a physical body and on earth, I can draw on food, water, and heat, to gain more energy for myself. In other words, I can gather more energy more easily and quickly than those in Spirit ~ so I offer my energy to your loved ones in sessions so that they can show me themselves, images, and deliver messages, with less work and strain on their part.
In the late 1920s and early 1930s there were around one quarter of a million practising Spiritualists and some two thousand Spiritualist societies in the UK in addition to flourishing microcultures of platform mediumship and 'home circles'. Spiritualism continues to be practised, primarily through various denominational Spiritualist churches in the United States, Canada, Australia and the United Kingdom. In the United Kingdom, over 340 Spiritualist churches and centres open their doors to the public and free demonstrations of mediumship are regularly performed.