Hello Unreal: Yes, I pretty-much always feel this way... sort-of a slightly dizzy, head-in-a-fishbowl feeling. I have most of my life. I'm 68 now. But I can recall, as a young man, mentioning this to a doctor I happened to see. He said it was anxiety. I do now have Meniere's Disease which probably doesn't help. (My head has taken a beating over the years for a variety of reasons starting when I was still a very young child.) But I don't know as Meniere's is the cause either.

I also experience generalized anxiety which I presume is probably the more likely culprit. I'm certainly no expert with regard to any of this. However, my personal perspective would be that if you have a generally positive attitude, do not struggle with depression, & do not have unusually high levels of stress / anxiety, I can't see how depersonalization / derealization could be at the root of your problem. But perhaps I'm just ill-informed. I'm sorry, I'm not aware of any particular therapies that are available to treat something like this. Over the years I've simply learned to live with it.