Answer:
I never was but always will be. No one ever saw me but everyone knows I exist. I give people the motivation to better themselves every day. What am I?
Soft hairy from door to door. I am the pet that always stays on the floor.
What's 3/7 chicken, 2/3 cat, and 2/4 goat?
Why is it so easy to weigh fish?
I am used when you jump off a bridge for fun.
No matter how little or how much you use me, you change me every month.