Answer:
If you lose me, you may cause people around you to lose me too. What am I?
In my life I must bare my bloodline I must share.
I come without being fetched at night, hide away as soon as daylight strikes. Although I may look small, I am much mightier than what you can imagine. What am I?
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?
I am the only thing that place today before yesterday. (one word)
I'm the source of all emotion but I'm caged in a white prison.