I had to take a really difficult test today that I don't think I did well on.
Miscellaneous bungling by a uniquely annoying woman in another office caused me no small amount of frustration.
My computer crashed repeatedly all day, especially after I started to feel safe and did a lot of work that I failed to save.
A middle school aged kid threw a rock at my car on the way home.
I know these aren't really that big a deal, but all the little things add up, you know.