Something's Amiss

I'm not sure what it is, but something has had me sailing off an even keel for the past week or two.  I feel like I am having a lot of trouble focusing and making any kind of decisions.  And I'm pretty sure it's messing with my sleep schedule and my appetite.  Both are really sporadic.  That's actually a pretty good word for it.  Everything feels sporadic.  

You know what I mean?