Everything in life is a dichotomy.
You cannot truly experience happiness without the ‘shoe’ of sadness as a comparison.
You cannot appriciate feeling well if you have have never been sick.
You cannot appriciate the sun without the moon, night without day, youth without age, feeling full without hunger, on & on…..and thank god it is this way, dichotomies give meaning to every experience where without the polar opposite there would be no true experience.
Go with the flow and don’t borrow trouble, enjoy what is in the moment! ;-)