Answer:
Timid or weak people are said to not have these.
Sometimes you feel it weigh a ton. Yet it is nothing, but somehow still there. Makes you uncomfortable around anyone, But speak its name and it's gone.
I have one eye, See near and far, I hold the moments you treasure, And the things that make you weep.
Tear one off and scratch my head, what once was red is black instead!
Mary's child slept in one of these
Two little holes in the side of a hill. Just as you come to the cherry-red mill.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?