Answer:
I make you weak at the worst of all times. I keep you safe, I keep you fine. I make your hands sweat. And your heart grow cold. I visit the weak, but seldom the bold.
The person who makes it has no need for it. The person who purchases it does not use it. The person who does use it does not know he or she is. What is it?
In your fire you hear me scream, creaking and whining, yet I am dead before you lay me in your hearth.
A precious stone, as clear as diamond. Seek it out while the sun's near the horizon. Though you can walk on water with its power, try to keep it, and it'll vanish in an hour.
If you have it, you want to share it. If you share it, you don't have it.
The more of me you take, the more I appear behind you. What am I?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?