A lot of things will set off my anxiety, but one big thing is change. 

Change in time, food, number of guests (less or more), etc. 

I understand that the changes are so small and literally changes nothing about what's happening around me or whats going to happen in the big picture...but it changes everything. 

I currently can't sleep and probably will be extremely unproductive and anxious tomorrow. Why? Cause my brother is here, and he's not supposed to be here. I didn't even know he was here until an hour ago cause he just kept to himself and I just so happened to see him to go the bathroom. Had I of not seen him, everything would have been fine, but his presence here isn't normal, and now I can't sleep. Knowing that he'll be here when I wake up (if I ever fall alseep) some how just ruins everything because he wasn't supposed to be here tomorrow. I had the day planned, I knew how it was going to go, as mundane as it was going to be, I was excited for it cause it was my day off. Now I'm dreading it cause I know he's here, and I wasn't mentally prepared for this change 

My brother is great, don't get me wrong. I have no issue with him, but he also doesn't live here anymore. I've grown accustomed to him not being around. 

Idk, maybe there's more than just anixtey at play with things like this? This is a common occurrence for me, where one small thing changes everything in my world, even though I fully understand its not a big deal. I just hate how much something is small affects me so profoundly.

I just want to sleep but my brain won't turn off.