In what way if any do your use the Copernican principle in your life?
I am not the center of the universe.The world and the universe do not revolve around me. I am not the center of attention.
Assuming you mean more than just heliocentricity or even general astronomy? I mostly ignore it, as my world, my perspective is centered around me, I am the centre of its influence, my influence does not spread very far and is non existent are areas even slightly removed from me, and the more distant other things, mostly, the less they influence my activities. I tend to do things in a small way, I do what I believe is right for me to do but concentrate locally.