I've nearly drowned, been hung by the neck, threatened with a knife, jumped by a gang, strangled to unconsciousness, been stuck in a hole and almost fallen off

I've nearly drowned, been hung by the neck, threatened with a knife, jumped by a gang, strangled to unconsciousness, been stuck in a hole and almost fallen off a few cliffs. An anxiety reaction feels nearly identical to a near death experience except it lasts way longer and there is no point where you escape to safety. However, I think the near death experiences were worse because they would cause even more anxiety later. I still freak out near knives and hate when anyone comes up behind me. People touching my neck will send me off kicking and screaming.