...When I Pretended to Be Busy at Work...

I swear, I'm usually so efficient and on top of things at my job. But the moment my boss asked me to join a big project that starts tomorrow...all my thoughts just went into overdrive. Now imagine me, sitting in front of my computer screen for what feels like forever, trying to act like I'm working but really staring out the window. What was I thinking? Shouldn't being overwhelmed be an excuse to actually buckle down and get stuff done instead of avoiding it... But sometimes, when reality is too much, you just want a little buffer to breathe. Am I the only one who does this? Is it normal...or am I losing my mind?