When I fuck up on rappel and fall, I just create my own reality by asking the ground, in a loud, clear, positive tone of voice, of course, not to hurt me when I land. Next, a quick pass of the sage smudge to purify and align my Chi with the ground's before impact. Finally, the instant of impact, I take the time to ponder the painful fact that all the new-age mumbo jumbo bullshit about positive energy, and mind over matter, and aligning the atoms in my body with the atoms in the ground like I saw in "What the BLEEP to we know?" isn't going to do shit for me because I FUCKED UP and I'm about to take a long, dirt nap.
All of this can be avoided pre-rap, though, by PAYING THE FUCK ATTENTION and telling your partner "I will see you in HELL" before any rap. Of course.