* Eh. It's Monday.
* A different barista being in and my morning coffee therefore not being as good as usual.
* Someone not replacing the loo roll once they'd used it up.
* Realising that I will no longer be entitled to free tickets to shows in a weeks time when I leave my job.
* My slice of pie in my lunch tupperware getting all mangled on the way in.
* Having to catch a bus instead of ride my bike (puncture).