A few nights ago, I had an extremely hard time sleeping, as my Husband was away supporting family. My brother was with me, and so was my cat, Teddy.
I would be going to bed at 10-11pm, but would lie in bed for ages. During that time, I heard knocks, doors slamming, and a little girl screaming (I should point out that I live in a Flat Block, and am on the lower level. And I have lived in this flat for three years).
I also heard a large train in the distance while I was outside having a cigarette. There are no little girls or trains near my area. I also felt cold eyes and breath on my neck. I do not like the mirror that faces my bed as I am afraid something will come out of it. On the 24th of March of this year, I woke up with the feeling of someone sitting on my chest and strangling me (but I could move, not like sleep paralysis).
My cat, Teddy, would act crazy and look up at the ceiling like there was something up there, but there would be no insects or anything I could see. I get a little freaked out when she does this, as I think she might be predicting a natural disaster.
During those nights kind of alone, I have drawn a negative entity to myself. This entity fed off my negative energy and made me feel so down and depressed that I almost considered suicide. If my Husband didn't return, I probably wouldn't have made it (my mind).
I do believe that spirit can mess you up if it really wanted to.