yes I have done this but the idea came from one of my therapists. here in NY what you do is a completely normal acceptable behavior and is a therapeutic tool for many different problems taught to people with anxiety, depression, low self esteem, PTSD and many more normal \ physical and mental health issues.

the basic premise behind it here in my location is to look towards someone who has positive characteristics about them and then act as if you have those same characteristics. this makes feel good about their self and that they are capable of doing and being everything that those they look up to are.

Im wondering if its not coming up on tests as abnormal is because this kind of thing is considered to be normal thing to do, and that your treatment providers do not know how to help you because you are doing something they consider to be normal and perfectly acceptable behavior that is a well known and taught therapy technique. how do you tell someone not to do a therapy technique that they learned how to do on their own.

only the person doing this behavior can stop their self from doing it, just like someone who twirls their hair or taps their fingers, or licks their lips constantly or puts their thumb in their mouth are the only ones that can stop these habits.

my suggestion would be if you dont want to emulate the positive things you see in other, when you notice you are doing something someone else's character, say to your self that isnt me, then go back to being and doing what you like to do, what you want to do that feels more natural to who and what you are...

example i love how my wife smiles a certain way. one day I noticed I was smiling like her so I told my self hey i just smiled like her, now to smile like me. then went back to smiling like me.

another time I wasnt feeling so happy but noticed i was emulating a co workers happy attitude. I said to myself ok just because so and so is happy go lucky doesnt mean I have to be then went back to being my not feeling so happy about my job at that moment.

that said if you mean having alters who's sense of agency is to copy others. when that happened to me my treatment providers said it was completely normal to have alters whos job, purpose, reason for being was to do this and that there was nothing to do about it. with DID part of the disorder is to have alters who have their own jobs, purposes, reasons for being what and who they are, how much control they have and so on which is now called "sense of agency" in my location. eventually when their sense of agency was no longer needed because I was able to handle my life on my own again they integrated /merged became one with me to now I am one whole person again.

in this situation my suggestion is to just give it time eventually the problem will solve itself as you become healed\ better able to handle everything that the alters are doing for you.