Shamanism is associated with traditional indigenous cultures, but modern times also have a great need for shamans. Shamans sense what life needs from them through meditative rituals. In this way they investigate how we can live in a way that makes sense. You step into the flow of life or, to use a term from Taoist teachings, you experience the principle of wu wei.
As a shaman, you therefore have contact with layers of energy other than those observable with the physical eye and in everyday reality. This is called "the otherworld". Through contact with these other layers, as a shaman you can gain more insight into disease processes or imbalances in life and also work with that energy to bring about healing. The focus is not on possible treatment of a disease, but on creating the condition for health.