Suppose someone gave you a pen - a sealed, solid-colored pen.
You couldn't see how much ink it had. It might run dry after the first few tentative words or last just long enough to create a masterpiece(or several) that would last forever and make a difference in the scheme of things. You don't know before you begin. Under the rules of the game, you really never know. You have to take a chance!
And of what would you write: Of love? Hate? Fun? Misery? Life? Death? Nothing? Everything? Would you write to please just yourself? Or others? Or yourself by writing for others? Would your strokes be tremblinglytimid or brilliantly bold? Fancy with a flourish or plain? Would you even write? Once you have the pen, no rule says you have to write. Would you sketch? Scribble? Doodle or draw? Would you stay in or on the lines, or see no lines at all, even if they were there? Or are they?
There's a lot to think about here, isn't there?
Now, suppose someone gave you a life...