Answer:
You have it even if there is none.
It comes only before, it comes only after. Rises only in darkness, but rises only in light. It is always the same, but is yet always different.
I have a ring, but no hands. I used to be plugged into the wall but now I follow you every where. What am I?
A mechanism to discover who is following you.
What can you hold in your left hand but can never hold in your right hand?
What is always coming but never arrives?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?