Limit of Frustration?

Is there such a thing? I think not if you're in the design profession. Imagine working on one concept for two straight days only to find out the brief was wrong?!! Ugh...absolute worst nightmare situation. But the positive of the whole"situation" (yes it was a situation, a BAD situation) was the look on the client servicing guy's face :) It was a scene right out of The Matrix...where Keanu Reeves is staring into the eyes of the villain guy(forgot his name) and absolutely nothing happens for the next few seconds and then that whole slow motion scene with the bullet popping-bullet dodging? Yes, that one. The only difference was, I was attempting to kill him with my eyes coz I had no gun! Then when I failed with my eyes(he was still there!), I cursed him and his last 10 generations and his next 10 generations. That scared him right. I'm still so annoyed though... Now I have to redo the 2 days work in one. Where is a miracle when you need one? (God, this is your cue.)