Frazzled.

Could I be any more rude while I'm driving (yes)? Why is everyone driving so slowly? 

I'm a wreck (no pun intended).  Feeling stressed.  Frazzled might a better descriptor. 

My house closing is scheduled for tomorrow.  It "should" go fine, but I'm nervous.  And I believe it will go fine.

Still, this sense of nervousness, worries, anxiety, whatever word you choose, I don't like the feeling, not at all.  Why can't I calm down?

Could it be that I feel so unproductive?  I must stay busy.