Answer:
It's in your hand though you cannot feel it. Only you and time can reveal it.
I am a piece of paper that takes most people 3 or 4 years to get. What am I?
What occurs once in a minute, twice in a moment and never in one thousand years?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Dry though I may be, I am still a sea.
A first job for many kids, this could be described as "Media Distribution Management.