Answer:
You get many of me, but never enough. After the last one, your life soon will snuff. You may have one of me but one day a year, When the last one is gone, your life disappears.
This is needed both for courage and hardcover books.
A morbidly-named body of water
A hill full, a hole full; yet you cannot catch a bowl full. What is it?
There are 30 cows and 28 chickens. How many didn't?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?