Several years ago I caught a segment of some TV documentary about Central American shamans. I only remember one scene, but it made a big impression on me. It was in the hut of a curandera who was doing a distance healing on someone. She went to her altar, chanted something, spoke some words, and lit a candle for the person. Then she left.
That was it. There was no checking back after five minutes to see how the candle was burning, no worrying whether she’d contacted the right spirits, no concern that maybe the ritual wasn’t going to work. She just went about the rest of her day seemingly unconcerned about both the process and the outcome. The level of trust she had was amazing to me. Oh, and incidentally, the healing worked.