Answer:
This is a dead giveaway
What is always on its way but never arrives?
Tomorrow's yesterday. Yesterday's tomorrow. What is it?
I'm the source of all emotion, but I'm caged in a white prison.
What has a head yet it never weeps, has a bed but never sleeps, can run but can not walks, and has a bank but not a cent to its name?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?