I don't know what title to give this...

I don't understand why the last couple of days I've felt so positive and then BAM this morning is a complete 180 degree turn around. I know emotional ups and downs are part of this whole experience but it's frustrating. I just hate being so down over something I have no control over. And what's worse is I'm sure that's what I get down about and it's all a vicious cycle.  
It's especially frustrating when you have to deal with people on a daily basis. I'm exhausted by having to put on a happy face - or at the very least - content face with people I work with. It seems like the average person doesn't know how to read people's moods and worse, doesn't understand what giving someone personal space entails. I know I'm expecting too much from people...I dunno just one of those days I guess. Better put my smiley face on and get to work.
Hope everyone's having a better day!