We can see this as one path to the top of the mountain. Mechanical aids, that is, tack, other equipment, are poor substitutes for true communication. They can mask what we mean, and they can lie. We do not communicate with other humans with physical controls and restraints, yet we feel free to do so with animals. This is true communication.
Soul touches soul and each is recognized.
Realizing this, we can take the next step up the mountain - we see that we have asked and god has answered. Close your eyes. Bring to your mind and hold the idea, that this animal you sit on is, in fact, a manifestation of god, as you are. Feel as deeply as you can that this horse is a version of yourself, an extension of your own oversoul in horse form. If the thought wanders out of your mind, pick it up again.