It's actually curiously different in my case. The issue isn't anything so conscious as worrying about whether I'll be having a good or bad day -- it's the *idea* of planning, all by itself, that is causing the visceral response. For an old used Pelican, that's quite weird (and is why it took so long for me to twig to it), but the aversion to planning is clearly lurking there in the back of my head...