Every Now and then, I have my main character do jobs like "Spell slinging" for example, but by mistake, I had them cooking when I meant for daisy to do that. So instead of resting and recovering a significant ammout of mana and health, I was just going through the motions, and went into a dungeon with less resources than I thought I had. Wound up costing me a good hour of progress, but I understand that's my fault.