Answer:
A dagger thrust at my own heart dictates the way I'm swayed. Left I stand and right I yield to the twisting of the blade. What am I?
You cannot keep me until you have given me. What am I?
Light hides me and darkness kills me. What am I?
I keep things green and keep kids happy during summer time.
I am a path between high natural masses; remove the first letter to get a path between man-made masses.
When is it bad luck to see a black cat?