ugh

I'm taking my pharmacy tech exam tomorrow.  It shouldn't be a big deal, but it is.  I don't feel like I've studied for it near as much as I should have or as much as I studied for it the first time I took it probably 14 years ago.  I'm old!!  I shouldn't have to do exams anymore, should I?  My brain does not function like it used to!!  Just pray I pass the dang thing so I can stop stressing about it!!  Please!