This is pretty much what I do all day -writers now the feeling but I'm sure many of you can relate to it as well.
Sitzfleisch: (SITZ-flaish, ZITS-) noun: 1. The ability to sit through or tolerate something boring. 2. The ability to endure or persist in a task. ETYMOLOGY:[From German Sitzfleisch, from sitzen (to sit) + Fleisch (flesh). Earliest documented use: Before 1930.
NOTES: Sitzfleisch is a fancy term for what's commonly known as chair glue: the ability to sit still and get through the task at hand. It's often the difference between, for example, an aspiring writer and a writer. Sometimes the word is used in the sense of the ability to sit out a problem -- ignore it long enough in the hope it will go away.