Normally my significator is the Queen of Staves. But I guess it makes sense since I do a lot of public speaking and teaching, as well as performing music. When I associate with this card, I feel really active and happy, like I can take on the world and be loved for it. But... when I am really grounded like bump on a log, lethargic, not willing to take action, I turn into the Queen of Pents. Coincidentally, also doing gardening, taking care of my apartment or cooking makes me show up as the Queen of Pents, lol. Boring but happy! (I'm such a wand.
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For basis of comparison...
A friend of mine always shows up as a Queen of Pents and she doesn't like gardening or cooking. She just looooves to shop and look pretty (and she is really gorgeous). Unfortunately I think this makes her blind to the emotional needs of others and that sometimes gets her into deep trouble with her bf.
Also, I have a friend who always shows up as the Queen of Cups. She's the most lovely and understanding person I know. But she can really start to feel terrible if she gets caught in the middle of an emotional conflict, perhaps because she can see and understand both sides too well.
My friend's ex-girlfriend (I read for him a couple of times when their relationship was nearing its end) always turned up as the Queen of Swords. Her personality was, well, airy, and her words cut. I think it may also have reflected how he saw her, as continuously rehashing over every detail of their relationship.