We've been using the "parts" language with kt for 3 years now. It's almost a mantra "I'm still kt"; no matter if she's in the midst of a dissociative state or meltdown or using her happy "part".
therapist uses all sorts of visual props to help kt realize there are many different parts of any person; that they can maintain their sense of self & permanency.
He has a gorgeous set of geodes that are ugly & rough on one side & beautiful & gemlike on the other. Stuffed caterpillars that turn into butterflies; a nest of eggs that turns inside out into baby birds, etc.
It all has to do with integration along with a strong sense of self & permanency.
Personally, my worried part sometimes overtakes my cheerful part & I'm still mommy. :flower: