Answer:
I bind it and it walks. I loose it and it stops.
Today he is there to trip you up. And he will torture you tomorrow. Yet he is also there to ease the pain, when you are lost in grief and sorrow.
There is one word that stands the test of time and holds fast to the center of everything. Though everyone will try at least once in their life to move around this word, but in fact, unknowingly, they use it every moment of the day. Young or old, awake or in sleep, human or animal, this word stands fast. It belongs to everyone, to all living things, but no one can master it. The word is?
What can be forever wound up but never annoyed?
Look into my face and I'm everybody. Scratch my back and I'm nobody.
I am rarely touched but often held. If you are smart you'll use me well. What am I?