A healing may include a soul retrieval, a power animal retrieval, a clearing, an angel intervention, a past life healing, a tarot reading, hot stones, crystals, massage, flower essence, and/or herbs. I leave it all up to my guides.
Shamanic work occurs on the energetic level of reality so it is perfectly fine for us not to be in the same room (or even in the same country) for the healing to be effective. Spiritual information transcends the physical plane. When you pray for someone across the country or the world, it is felt by that person-- long distance healings are very powerful.
Many of us pick up negative energies. If you were in an argument, have visited a hospital, a barroom, or maybe even just passed by a scene of a crime--if you were at all not feeling well-- you may have picked up what we call spiritual intrusions. Believe it or not, over time, our own negative thoughts, can become intrusions in our energy field. A shamanic clearing is a good option if you feel an immediate need to clean up your energy field.