for "to endure" I want to write this in "future" time, is that correct " you will have to endure"?

What stories would you tell yourself?
you know nothing will help
through this pain you have to endure


If you make it "through this pain you will have to endure" without further explanation, it sounds like the pain has not started yet. "Endure" has enough of the future in it. It's good the way you have it.