I have recently discovered that hardcore punk (like the album Feel The Darkness by Poison Idea) played at high volume in some headphones really helps me when I have to do those kinds of tasks. My hunch is that is translates my ennui into cathartic anger that I have to do this studpid f__king task, which generates motivation to show it who's boss and I plough through it. YMMV obviously - relies on you enjoying hardcore punk!