What do you mean, you failed? Did someone tell you the future? Many timelines converge in this place, it is possible that the future you have been told of is not the one you will go back to face. I have met someone from my world who claims to have died at the end of our fight, but I know that in my timeline, he survived...

[Oh, it hurts to speak of Link like that, but it's true. Hearing "the future" means little in this place, not without confirmation that it is indeed your own timeline that you're hearing.]