the body and brain are just vehicles/interfaces for consciousness. chemical reactions in the brain are a result of external energy connecting to our energy systems. they are reactions, not the source. our ego is conditioned to connect to certain external emotional energies in accordance with external stimuli and desires. this can all be undone and tailored to your own preferences. an example would be if someone were to insult you and you were conditioned to connect to anger or rage. your mind would then react to the emotional energies of anger or rage and seek retaliation. if you reconditioned your ego you could receive insults and connect to unconditional love and only feel sorry for the asshole who is insulting you and not seek retaliation. rather want to help him/her. alternatively you can master your ego and mindflow so that if you still connect to anger or rage your consciousness is separated from emotional energies. so when you feel rage you would know that it is only an external energy and you would have no angry thoughts. the feeling would just pass by without you having reacted to it. the best way to learn is through yourself. get to know your feelings and thoughts inside out. learn to separate your consciousness from your emotions. alot of thoughts arise as a reaction to emotional energies, these are always from your physical consciousness. switch your mind off and wait for thoughts to arise. soon you will identify that some thoughts are not your physical consciousness but from your higher and/or universal self. with time it will be clear as day. same process for identifying thoughts arising out of communication from the beings that are with you.
the soul is just an impermanent interface to emotional energies and a warehouse that stores emotional memories. many people confuse it with spirit. emotions that you feel are not you.. you connect to them like a radio connects to a station. ego is the antenna, you are the battery. your mind is the tuner..

evil spirits are nothing more than illusions. they are the most potent manifestation of fear and paranoia in your psyche. this is the toughest test any human can experience. it will come in many different forms depending on the individuals conscious and subconscious belief systems. they normally exist in the mental planes of existence and when the time is right they will manifest either in dreams or your physical reality for you to deal with. many people get locked up in psych wards and are labelled with false conditions such as schizophrenia, bi polar and the like. they are given medication that destroys their soul and spirit and are left to suffer for the rest of their lives.

all you have to do is come up with a formula to defeat these manifestations of fear and paranoia (illusions) and they will disappear. think of something resembling a battle and confront them. use any tools you can come up with to banish them. usually asking for the blue sword of michael or jesus only works in mild cases. get creative, use any technique that you can imagine. have full faith in your higher levels of being to repair this situation. they hold the key to all of this. you need to create some sort of placebo to enable them to do it.

lost fragments (ghosts/poltergeists) of consciousness do exist but they are another story. they exist when physical (human) consciousness cannot reunite with singular spirit consciousness after death, the duration of which is some consider to be hell (as explained above).

many humans are on a path of remembering, so in order to remember and link back to those energies from past lives, a challenging/traumatic/difficult early life is in most cases a prerequisite. levels can vary greatly in terms of how much trauma one has experienced in those past lives, and this should correlate with similar life experiences in this life in order to flush everything out, transmute it, and remember. most of us have been persecuted, incarcerated and tried to do the right things in times similar to the present where doing the right thing is definitely not the norm. If you truly understand how governments/shareholder value/authorities/reserve banks/pharmaceuticals/media/mining & energy/science operate you know what I mean. don't judge others if you can help it and don't hold grudges. just feel as much unconditional love for all lifeforms as you can, it comes back 10000 fold!