For me at least the problem is that my mind is working as an grown-up mind and understanding things like a grown up on a rational level but unfortunately the rest of me often reacts and feels like that little child who does not know much yet other than fear and pain and bad things. And it does not help much when my mind is stepping in telling the rest of me what my rational parts see.

For example some months back I was on my way home late in the evening. I passed by 2 men who appeared to be somewhat drunk. When I was just passing by they said something to me. I tried to ignore them and walked by nt looking at them. But then they turned and walked the same direction after me.
I got all panicky and was so relieved when I made it into my appartment. But even inside I was too afraid of turning on the light for a while.
At some moment my mind stepped in and said that those men did not want anything from me. They just happened to walk the same way and the danger I had felt was not there at all.
Although logically I had understood that I still could not manage to be sleep in the dark for about a month and still have sleeping trouble since then. And telling myself that this was nothings does not help with my sleeping problem at all.
It is just 2 seperate things dealing with the same situation in a different way. And I just try to accept that the way it is and work on making my beddroom a safe place and being able to sleep better again.