Answer:
I tremble at each breath of air, and yet can heaviest burdens bear. What am I?
I get wet when drying. I get dirty when wiping.
I can be hairy and itchy all over. I can be the scariest thing you have ever seen. I stand in the middle of nowhere, hanging on a stick. What am I?
I start new then become old. Start clean but be one dirty. I usually start big then become little.
What has a bottom at the top?
I'm the source of all emotion but I'm caged in a white prison.