which was when I was a child and was told by my mother that everyone must face satan/demons by themselves to overcome it.
Well it had happened to me at a very young age. I started noticing peculiar things happen to me that started out small and ended rather big. The first of such was the missing lego piece. I was playing with my lego and misplaced a rather large pre-assembled piece to go with a spaceship. Looked everywhere. Could not find it. I had my own room dedicated to lego and I flipped it upside down looking for it. Must have been for a week I lost it. Then a friend came over to see my lego set and I told him I was missing a piece to complete my ship, and he randomly picks up a piece and asks if this was the one - which it was. I was shocked that it was there in plain view. It was then I started suspecting something.

Few months later I would hear fast footsteps outside my door. I would run to my parents room and would be tripped by a soft invisible object.
Things would escalate when a ouija board mysteriously appeared in my room. I threw it away but it would always come back. Had to burn the thing. Boy did it make some weird noises.
Then the big finale came when I woke up in the middle of the night and the whole room was red, with bodies hanging upside down from the room. And cloaked figures chanting strange things. I gathered my courage, sat up and yelled "SHUT UP!" and laid back down. Immediately they disappeared. I knew it wasn't sleep paralysis because duh I could move and talk. Everything went smooth for a few years after that, but then I found the internet in '97 and loved chatrooms. Being bored in a chatroom one day, I decided to join channel satan. This is pretty scary for me to write, but I'll go on.
No one was in it was a user channel. Was about to leave when, all in about half a second maybe less this happened.

[satan has joined channel satan]
satan rolls on the floor laughing
satan rolls on the floor laughing
satan rolls on the floor laughing
[satan has left channel satan]

ever since then I have had no doubt in my mind that there is evil everywhere and that demons now roam the earth.