In one of your comments there is the line, "The fear is in not surviving and the trust is that it will." We can apply that to us as well as horses. The ego, the emotions, the fears, the obsession with persona and possession can cover or smother our essence. Survival relies on our ability to unpeel the layers of 'conditioning' be it cultural, educational, or emotional in order to reveal the pearl at our center; the real deal; the energy that animates us (which can never be destroyed). Once the phoney reasons for our fears are dismissed, for us at least, it is no longer even a matter of trust; we're free then. Free to live out the energy that we are and that is so much more than survival. As you train horses as I do, you have seen that even with horses, once the fears are gone, the animal becomes powerful enough to give us its gifts.
We need to be warriors against the FEEE-UURR wherever it lurks.