There are often said to be two distinct types of religious experiences – numinous experiences and mystical experiences. Rudolph Otto said that the idea of God generally makes us feel two things: fear and fascination. These feelings describe the attitude of the Abrahamic traditions and of Western religions in general. They generate a transcendental, external reality that often preys on fear and generates more and more of it, in part by creating the idea of a being much larger and more powerful than any individual or group of individual could ever be.
Mystical experiences, on the other hand, in the more narrow definition, are much more internally based. They emphasize self-reflection, contemplation, and inner discovery. The self-contentment they engender is due to love, joy, or a feeling of ecstasy. These are usually outcomes of Eastern traditions because of the different principles they espouse. However, it should be said that Western religions sometimes get it right and reflect the same values of contemplation, joy, self-reflection, and other inner discoveries, but it is not nearly as often as Eastern religions. Buddhism is a very good example of a tradition that emphasizes the internal aspects of religion that are very valuable throughout life.
Ecstasy is the extreme happiness and joy that one feels when they are having a mystical experience. It takes a person out of their rational mind and out of their usual self to make them stand out, in a way. It is reminiscent of a layer of intense joy and happiness over everything.