Thank you for the questions! We typically prepare by being steadfast. Lots of prayer, bowing at temple. Healing typically needs grand ceremonies, which are very costly. Grand ceremonies require a lot of food offerings, special order ritual items from Korea etc. It's only mildly applicable. Healing energy is power granted to us by the gods, and is transferred to the client during the grand ceremony. The energy is typically sent to the physical body, though we did healing for emotional/ mental too. We all go into trance in order to receive the gods into our bodies during prayer rituals, divination and grand ceremonies!