Do you have polarity?

[Sacred Fool]

I just thought it would be fun to post this to see what folks have to say.  I'm not thinking about percentages, but just the stuff in general.  How do you define it for yourself?  If you think you have it, how do you know that you do?  How would you measure it?  (more than none?  it dominates my life?)  What causes it to increase, to decrease?  And here's the big one: how does it relate to your desire to serve?  How important is that interaction?

Thanks.