SIDDHIS, OCCULT AND PSYCHIC POWERS
Siddhi is a Sanskrit word meaning “perfection”. Siddhis are occult and psychic powers that are awakened by the control over the psychical elements.
Siddha is the accomplished, perfected soul. It is a person who has fully developed his pranic or psychic capacity of body, mind and spirit and who has control over the mind, spirit, elements and nature.
Siddhartha is the one who has accomplished his being. (Siddharta Gautama is the name of Buddha, the founder of Buddhism in the sixth Century before Christianity).
To achieve supernatural powers is possible for any person involved in any deeper spiritual practice, Spiritual practices could be birth (lived as a practice), “planned” or “not planned” asceticism, “planed” or “not planned” mortification, the use of herbs or powerful sacred words, mantras, or Samadhi.
Siddha is a human being just like any other. The only difference is that siddha has more developed occult and psychic powers than other people. There is no need to be afraid of such person.
Also remember, one should never desire or try to achieve siddhi. Such desire and trial can bring real catastrophic chaos to life, both to the life of those who crave such powers and those around them. However, life will bring such people to the great exam anyway.