Lest anyone think that I am always positive, always overflowing with patience and calm, may I demonstrate that in addition to running a tender post I wrote about bedtime, the Huffington Post also shared a not so sentimental moment that I experienced: So as we all slog through another Monday, maybe you started yours with an emergency trip to the dentist for your child like I did (which let me tell you, there is nothing that brings the sense of failure as a parent to the surface as a toothache and , “Hmm, looks like you haven’t been here in almost a year,” tsk tsk tsk from the dental hygienist) or maybe you were desperately trying to wrangle a snack for pre-k that fell…