It's hard to do even though I know it's right

I need to draw up a prenuptial agreement, and as a last step, we have to notarize it together https://onlinedivorcer.com/county-specific-resources/texas/divorce-in-collin-county. Our divorce is very amicable. We have no children and limited funds, so everything is very simple. I know it's right. But it still hurts so much. I know that I need to do this and move on, and delay will only delay things. But I feel so much pain. I mourn the future and dream that will never come true. Everything that I thought would happen in my life is gone. There are moments when I think that if I had done this or that, maybe things would be different now. Sometimes I feel like a failure. I wish this divorce could just be done without all the paperwork. Some days I barely recognize myself. Sometimes I barely recognize him. How did it come to this. Why wasn't our love enough? I just feel so broken right now.