I have several things to say...
I was reading a book by John Weir Perry... He says some interesting stuff about psychosis... There is still no known cause of psychosis, but every single case always follows the classical archetypes. For example, I Achilles from the Illiad because I am a hero trying to fight a war but I am indignant about my mortality... Just like Achilles, I know that if I fight, I will die. If I don't fight then I am dishonorable... I want to be honorable and alive, but I am torn between the two and can only choose, just like Achilles. I am of the same Archetype as Achilles. Every single case of psychosis mirrors ancient myths and archetypes. It is crazy. Anyways, maybe that this is caused because schizophrenia is a spiritual/psychological thing. A mix between the two... The soul and the body are connected and thus affect each other... and because you say you follow Jesus(congrats)... The Bible says that your sins can affect the two or three generations after you... So maybe, because of the sins of your ancestors, there is still an intense spiritual battle waging around you. The battle may cause psychosis... but evil won't triumph in the end, so stay strong. You will probably be amazed to see all that was really happening around you when you get to heaven.
Witchcraft is extremely dangerous. Witchcraft is biblically considered to be equal to direct rebellion against God. Not unforgivable, but dangerous. I doubt anyone wants to be Dr. Faustus... anyways, it is ok to look into the occult,(occult really is just mystery and hidden things) but not all of it was meant to be known by people. If you want to experiment with it, go ahead, but be careful or you may become like Dr. Faustus. I guess that is that...