It is based on the practice of Dharma, the code of life. Shruti is considered more authoritative than smriti because the former is believed to have been obtained directly from God by the spiritual experiences of vedic seers and has no interpretations. This web page provides you with the aspects of Hinduism Spirituality that intrigued me the most. I found all four of these aspects very mystifying, interesting, and challenging. In ancient times this kind of poetry and counseling was well known in the form of prophecies and visions from seers or shamans.
Reincarnation is a concept that perceives an evolution of the soul on a physical plane.
If you are able to perceive in a time-independent way, as the soul does, you are beyond it. One step in this self-realization might be the reality of Reincarnation. Healing is a term to recover health in a physical sense, that's the usual use of this term, I hope to expand that view to an understanding to recover true identity as spirit, where health is an expression of soul-balance.