Answer:
I start in little but I end in full, you'll find me in half and complete.
What can touch someone once and last them a lifetime?
This is a dead giveaway
What kind of room doesn't have physical walls?
It goes up and down the stairs without moving.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?