|I think it's funny (and stupid) when advice consists of phrases like "just breathe". I hear it in sports a lot, and I know a girl who got it tattooed on her wrist. What's the alternative? "I think I'll hold my breath until I pass out." You don't need to say it if it's literally an unconscious function of the human body.
The same goes with advice about drinking water. It used to be accepted common knowledge that drinking [X] cups of water a day performed some vital function for your body. But then the experts changed their minds about that quantity when people realized drinking more water provided no measurable benefit. How about this advice: Drink when you're thirsty. That's it. Why do we need to make this more complicated?