Crushed... my will has been broken

Did the pre-ride for the SM100 on Sunday. Drove the 3 hours down to Stokesville and back that night. We rode for about 6 hours doing the last 40 miles of the course. OMG... I was crushed, destroyed, whatever... I mentally broke around 30 miles and would of quit if I had the opportunity. I seriously doubt that I can do the 100 miles now and even was just going to say f**k it and skip the whole thing. I've talked myself back into it now and I'm going to just go until I can't go and that will be it. If the bike ain't broken or I don't fall over dead I will keep going even if that means walking the damn bike. Forget 12-14 hours, 16+ hours here we come...