I have dealt with the same thing with each therapist I’ve been with. First thing I thought about when I wake up and last thing I thing about at night.
It’s taking me a long time to get to a place that I don’t do that as much. Sometimes it tears it’s ugly head and a spiral into anxiety. I’m not sure what shifted but I am no longer in that headspace, usually. For me it was a lot of talking and taking her down from the pedestal I had her on.