why ?

I didn’t brush my teeth yesterday night…

I had a dentist’s appointment on June 7th and every night since that day, I had been brushing my teeth… unless of course I just fell dead on my bed after a long day…

Yesterday night was different, I was there in the bathroom… I saw the toothbrush and the toothpaste… and I decided not to brush… I feel so ashamed… why ? why ?? why did I not brush my teeth ?