Answer:
Hard to catch, easy to hold. Can't be seen, unless it's cold.
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?
Kills the bad ones and the sad ones. Tightens to fit, so one size fits.
We are all around, yet to us you are half blind. Sunlight makes us invisible, and difficult to find.
Fatherless and motherless. Born without sin, roared when it came into the world. And never spoke again.
I can only be played on a windy day