Why my manuscript just cannot go....

I spent 7 hours today on writing a document for a company project, and I was almost done. 5 pages were just streamed out my of mind, non-stop. It describes why and how blah blah blah should work.

Okay~ now it's time for my research manuscript, but it sucks for already 2 hours.... no single word is ever written......

OMG...... I should come to school during morning~!! (Does it really matter?)