Indeed, It not unknown for me to look the perpetrator in the eyes and say "I resemble that remark!". Humorous Indifference is a good skill to acquire to protect yourself in socially adverse circumstances; being deaf I learned this quite quickly Kids are horrible.
That' probably because you are doing the same thing, the same way, everyday. You've become hardwired to a certain way of thinking and behaving. and so it has no novelty value; one day blurs into the next just the same as the day before. We all need some routine but try and do or think differently, in some way, everyday. When people say: "Where has all that time gone?" Everyday was the same, so life just seemed like one day, subjectively. Your mind will cast back to the nearest memorable day that was different . Very often, that different day was months or even years ago.
The answer is to consciously and proactively punctuate your routine with novel, enjoyablememorable experiences; no matter how small. Embrace not being the same all the the time.
Shake it up.