i don't know if i have DID/MI i haven't been diagnosed with it but i suspect i do..something that triggers a switch for me is when i see someone i suddenly want to be like, like how they are dressed. my personality will switch to the version of me that can accommodate that. it's hard to put into words. sometimes my churchy personality comes out when i see something or hear something that makes me think of church. a song. a kindness. even people who look like they would be church going. i have to make an effort to reel my personalities in and try to connect with my host again before i get carried away.