Also see Types of Mystical Experience. Mysticism is usually defined in dictionaries and encyclopedias as a spiritual discipline used to make contact with the divine.While this definition is frequently correct, there have been many people who have had mystical experiences without following a special discipline.n some cases, mystical experience is seen as an important component of a religious tradition because it can offer validation of a tradition's belief system. It also can be important in attracting adherents because many people hope to have similar experiences.