1. Motion. Motion in life is what purifies and refines the soul, just like water which carries away toxin and nourishes the earth.
2. Yes, it's of paramount importance. A corrupted soul or at least a deadened one, can no longer enjoy their work at best and at worst, it ruins whatever it touches.
3. Everyones will manifests differently based on their desires and abilities but it all comes back to being able to move themselves and the world.
4. Not much, the weather has been nice as of late though. It's encouraging.