Generic Greetings

I can understand why Clive Wearing gets frustrated when people ask him "How are you?" or how his day was. Well it's more complicated for him because his memory restarts every 2 minutes or whenever he becomes distracted. That phenomenon causes him to believe he's just woke up for the first time. It's too broad of a greeting and when my day is stressful, I don't really want to sum up my day in one word. Just let me be a hermit.