Answer:
Everyone has me, but nobody can lose me. What am I?
I had a bright start, but I couldn't take the pressure. I consume everything, yet I don't eat anything. What am I?
I regularly change shape yet remain a sphere. I am always there but not often seen. What am I?
I run cold and hot, I look blue but am red. What am I?
Without a bridle, or a saddle, across a thing I ride a-straddle. And those I ride, by help of me, though almost blind, are made to see. What am I?
Break me and I am better immediately set and harder to be broken again.