Answer:
You can have it, and be at it, But it never lasts forever.
I occur twice in eternity. And I'm always within sight.
There is a man in a 4 story building. He jumps out of the window and is unharmed. He used no padding, and had no harm done. How?
This is your stomach's way of letting you know you've neglected it.
You can't keep this until you have given it. What is it?
What is always coming but never arrives?