Spontaneity causes me to be extremely stressed. I like routine, and if there is a big plan, I like to know about a while in advance so I can emotionally prepare. Even then, I might have a meltdown because in general changing routine stresses me out a lot. For example, I once went to an event that was supposed to end at a certain time. So I planned out my entire schedule and routine around that time. But apparently the event would go until later, so my entire routine was disrupted, and I had not one, not two, but three meltdowns that weekend because it threw me off so much. I'm not as rigid as I was then at the moment, but still, something being off schedule or spontaneous is never a good thing.
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"Don't mind me. I come from another planet. I see horizons where you see borders." - Frida Kahlo