Hi. I grew up in a christian household, the idea of hell somehow always scared me, my father always told me to pray. Some day I just thought “Wtf am I doing, I have serious mental problems why should I concentrate on being christian and believing in a personal god, a metaphor which was taken too seriously.” So I became an atheist, christianity never made sense to me, the bible never had deep meaning for me, it only told me that I should beware of false teachings because they belong to the devil, I will go to hell and so on, the only people I respect are the saints even if I disagree with some of their points( hell, devils religions…). But everything else is the most propaganda like thing I have ever heard, even if I know that the bible is metaphorical and we can not express truth as it is, the hell is explicitly mentioned. Christian Hell is complete gullibull, simply nonsense in my opinion. Some days ago my aunt which has serious health problems hired a “christian healer”, he told her things like " Your family has an ancestral trauma which is created by the devil" and forbid her daughter to read harry potter and thinks card games like Yugi Oh are demonic. He also wanted to talk to me, I denied it because I knew that he would talk dogmatic nonsense to me. But here is the tricky part, my parents told me that I should pray to god ( I love them and did it), they gave me holy water from a german place and I painted a cross on my head. After painting this cross on my head, I experienced fear of hell, I even thought about becoming christian. Some voice in my head told me that I should stop with new age false teachings and that I am posessed. Is this just my Obsessive compulsive disorder or some kind of christian spirit? I never had these thoughts, only when I started praying and painting the holy water on my head. For real I am scared and do not know what to do, this voice is talking to me every fucking night, sometimes I can not even sleep, my depression and Ocd makes this even harder. What should I do?
Christian magic can be very strong and very baneful. Sounds like an influence spell could be in the mix, and the cross on the head is an enchantment that delivered it.
I’d do an unhexing and have a nice salt bath cleanse to get rid of the unwanted energy, and possibly place a binding on whoever put a cross on my head to ensure they could not continue to work against me. A good grounding never goes amiss either 
I sent a P.M. If the christians call your occult, yoga, psychic practices the “Devil”, you could always tell the christians, '“You have Blasphemed the Holy Ghost”". Jesus is supposed to have said this is THE unforgiveable sin. ““Because they said He had an unclean spirit.””. Telling them they blasphemed the holy ghost might shut them up and maybe even drive them away. Maybe.
Give this guy a call:
Uncrossing in general is a good habit to get into, as well as banishment.
blasmephy rituals have also been very empowering for those who have experienced religious tramua if that is within the realm of possiblity. If that is the direction you want to go, Baal Kadmon actually just published his book on the history of Samael that has a ritual that those of the faith would be considered to be blasphemous, as it involves rewritting a Psalm by replacing god’s with Samael while asking for protection. It is certainly not the only method. Could come in handy for protection from future influences.
Even now this voice tells me that I need to pray, if I do not bad things will happen. I will give a try to summon Cozher, blasphemy would be a little bit to hard for me( I think the feeling I have to pray and get Christian would get stronger)