Thanks for your replies.

The difficulty I have is working out when my "anxiety" is appropriate and when it is not. I have witnessed some fairly difficult things (near drowning, my baby getting swapped at birth, my brother being arrested due to false allegations) and so I know that shxt can happen. I know the "what ifs" can be real - how do I untangle my brain to know when it is OK to be on alert and when I am over-reacting - or is anxiety about over-reacting full stop, regardless of how intense the situation is?