This is new age junk, not even a meaningful phrase.
Every statement for it to be true has another statement that expresses the
opposite situation. This is just the reality of definitions. A definition distinguishes something from
something else which is its value. Because something is defined in a positive way it can be defined
in a negative way, where the object described is not present.
If I define a set of 3 things, the 3 states of water, solid, liquid and vapour, any one state excludes
being any of the other 2, not just one. I could express being not in one particular state as its
polar opposite, but this is just another way of saying the reverse of a positive affirmation of something,
so what.
Once you get into morality or very complex systems, it is dangerous to talk in these terms.
What is the opposite of murder, it is not creating life. Murder is stopping one part of a persons
ability to live, which stops them all. Creating life is a vast complex series of actions, which involve
many processes etc. so the two are not opposites, though in this polarised language can appear so.
Some say war is the opposite of peace, but in reality war is simple, a pitting of total power and ability
to kill of one society against another. Peace is a complex series of negotiations and compromises,
which is much more difficult to set up and maintain. War is the disease of a lack of compromise in
a time of peace.
These simplistic junk ideas like "polarity" give people apparent credibility when they have none.