Everything is a Catastrophe!!! (not really)

I'm struggling.  And I'm struggling with my struggling.  My anxiety is one of catastrophe.  You know, my brain thinks one thing and within two minutes I have drawn the conclusion that I'm dying, or everyone I know is dying - that kind of thing.  "Catastrophizing" is what I've heard it called.  And I'm AWESOME at it.

I'm trying to figure out why I do it.  I know once I finally have that answer my whole life with change.  I understand what's happening from an intellectual standpoint, but I don't know why I personally continue to do it.  It feels terrible, makes me incapable of having any fun, or just living in the moment and having a regular day.  So, why do I keep doing it?

This is the journey that I'm on and I'm extra tired today.  I hope I can find the answer soon.