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?
What begins and has no end? What is the ending of all that begins?
You’ll have me at night and if you remove the first letter I denote the top, such as on a train
The more you take, the more you leave behind.
Hard to catch, easy to hold. Can't be seen, unless it's cold.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.