Answer:
Take it and you will lose or gain more than the others.
What has to be broken before you can use it?
I am needed for most animals and hardcover books. What am I?
The time between daylight and darkness when blood drinkers like to come out
I never sleep yet sometimes I weep. I can get angry or just be happy. Wherever you go, I will follow. No matter what you do, I will be there. I cannot die. What am I?
No matter how little or how much you use me, you change me every month.