It's been a week of revisions for me. I like the work I drew, but the paying folks sent stuff back to the drawing board. In many ways that gives me the same feelings as when I'm just in an art block. Like, "really I have to redo this?" then I watch 3 hours of TV and ignore life.. haha...
On days that I just can't get crap onto paper at all, I browse the art on Pinterest or Deviantart and look for inspiration. Sometimes it helps, sometimes not. I also clean my house or organize my files. Sometimes the clutter gets in the way of my zen.