Answer:
I cut through evil like a double edged sword and chaos flees at my approach. Balance I single-handedly upraise through battles fought with heart and mind instead of with my gaze.
I am always in front of you, but you will never see me. What am I?
Use me to reward good behavior.
You throw me out when you use me and take me in when you are done.
I am the best thing that can happen after a stick hits a ball.
Keep doing me to avoid lens dryness