This is such a freaking truth. You can't just be a total asshole all the time and then say, "Sorry, I have [x] going on, " or "I feel [y] today." It's difficult, but entirely possible, to treat people with respected even if YOU are feeling shitty. Some people need to learn this.
This is so true. I think it's more important to listen closely to what people, who call themselves your 'friends', don't say & do then what they actually do. Their true colors will shine thru if you just pay attention!!!