> and contemplated the mistake I had made

Reminds me of my own "contemplation" on the way back out of the Grand Canyon. Getting down there is hard. Getting back up is way harder. And the only "food" I took with me was a six pack of beer, so somewhere halfway back up my body ran out of glycogen and I couldn't even maintain my body temperature. Thought I was gonna die, and realistically I could have died, actually. I was there alone, and had I sat down to "rest" that could have been it. Moral of the story: if you're going to attempt something physically demanding like this, at a minimum have plenty of energy dense food, water, and a thermal blanket with you. That's how I pack for longer hikes nowadays.