Ungroundedness and terror

It’s hard to describe this, but I often feel like I’m (mentally) in an open field surrounded by dense fog and I’m not sure what’s going to leap out and attack me.

I used to be have the ability to feel grounded and contained, but the most I can do is deescalate when I get panicky.

Has anyone else experienced something like this? What replaces it as you heal more?

Gotta say, after sixteen months I know this is an improvement from the unending certainty of doom that I had all the time, but it would still be nice to know what comes after.