Had a drug induced, nervous breakdown in the late 70's, while studying, as my life was spiraling out of control in the insanity of adolescence. The fog effect has lingered for nearly 40 years.
I always attributed it to demon attack. Not giving any creedance to the fact that mental illness runs in my family and that my life at that time had just entered a "Perfect Storm".
The fear of demonic attack was a hallmark belief in KH upbringing. I no longer give it the same value as do witnesses. I don't discount demon activity, either but everything that happens to us is not a result of demon activity and influence. A lot of it is due to our own desires, feelings and inclinations. We just suffer from the effects of our choices.
I think you'll fair better than most for your courage to look at things with a sound mind. Good goin', Sab!!!.