i spent a lot of time dealing with depersonalization and derealization on top of DID-like stuff.

the depersonalization/derealization were very intense for me at times to the point where i often wondered if i was just a character in a movie or a play and was being watched from above or something. i also questioned whether i was really alive. it got so bad that i contemplated trying to end my life to 'test' that theory. but that was also a result of a medication i was on that made that significantly worse. thankfully, i got off of it and did not follow through with that...but it was very distressing wrestling with those kinds of thoughts.

i think maybe learning some grounding techniques might help and not looking in the mirror for long periods of time. if you can try some grounding techniques, they might help lessen some of that for you and bring you back to yourself a little more maybe.

i never really have had grounding techniques work for me for some reason so cannot really suggest anything, but i just know they do work for some people.