These past days:
I was confident that I have finished all my tasks, so I spent some time learning about new stuff. Everything is alright in the universe.

Monday:
The person where I get the requirements for is on leave. No worries. I finished everything that needs finishing days ago.

Tuesday:
Whaaat? I see an email where there are new requirements which can't be implemented easily. Where did these come from?

Today:
Tomorrow's UAT, and what's more, it wasn't brought to my attention that there are tons of stuff left to be done. Additional modules, additional reports, crap. Cutoff time for check in is fast approaching, and I'm only 90% done.

*Throws in the towel.*