Hi ThunderGoddess, if it's bothering you definitely tell your T. Doesn't matter how "big", "small", "embarrassing", "uncomfortable" anything is.........if it's bothering you, it matters!!
But just to throw a few thoughts your way.........I'd be asking for causes too. I mean sometimes we do interact differently with different people............some may make us feel more positive/motivated in general.........some may make us feel comfortable in being vulnerable or open.............some may make us feel more relaxed.............some may make us feel like we need to be in control..........some may make us feel like we need to please them or prove ourselves...........and there'll be different things we've shared or experienced with different people..........so our whole attitude/what we put across can sometimes be different with different people including tones of voice, body language, level/manner/pace of conversation and what we talk about.
Maybe you're worried though about not "being your true self"/or being "split off" sometimes??? And maybe that's something you might want to talk to your T about............but otherwise I'd say that sometimes different aspects/sides of us come out with different people. And maybe the different voices aren't too different from each other to allow it be be more a reflection of how you're feeling/your relationships with those people, do you think???
And maybe if it's not more than that.............sometimes you might want to just allow yourself to just be the "you" that comes out when talking to some of those different people, but if you don't..........
Then perhaps have a think about the way some of those people make you feel, challenge those feelings if they aren't as positive or think about how you can change the way you feel with them.
Think about how you'd actually like the levels of interactions to go with some of those people..........and that might involve thinking about your true/real feelings, who you are/what you want deep down, in a sense. Then perhaps rehearse bits of conversation or imagine talking to them on a different level.
And as you're conscious that you're doing it that might help a lot in some self-monitoring when you're with different people............so perhaps some extra focus when you're talking to people and when you're finding yourself switching/falling into voices maybe you can try pulling back?? It might sometimes take a lot to do it, as it sounds like a habit (??) but maybe with practice...........??
And at those times maybe try to remember how you might interact with someone else, and try to bring that more into the approach you're using with the person you're with???
Even use breaks in the conversation/or times they're talking to "take a breathe" and try to come back at them differently???
So just some thoughts...............but definitely talk to your T if you think you need to.

Alison