Answer:
I have to be broken before I can be used
It's in your hand though you can not feel it. Only you and time can reveal it.
I go around in circles, but always straight ahead. Never complain, no matter where I am led. What am I?
What word when read from left to right is a ruler, but when read from right to left is a servant?
If you have me, you want to share me. Once you share me, you won't have me. What am I?
What kind of dog has no tail?