Like any art some have a more natural bent or talent for it. Further, like an art, it can be developed. We develop it by refining our thoughts, through growth in contemplation and practicing an inward silence. It requires discipline, practice or apprenticeship work. The Rosicrucian teachings, in this regard, offer exercises to develop the intuition and the inward work necessary for a mystical experience of illumination or Cosmic Consciousness.
Mysticism is an active process.
It requires concentration to direct the mind, quiet the noise and the intellectual processes during meditation, for example. It requires a desire to even consider other realities besides our daily, mundane concerns. It requires discipline to then apply ourselves, if only for a few moments a day, to what we have decided is worthwhile, important and ideal in the human life. It takes effort to avoid being overwhelmed by the continual distractions of the world, the demands, the angers, and all the various competitions for our energies. Many have found the systematic process of the Rosicrucians teachings extremely helpful in the mystical process, as they provide the opportunities for daily practice, attention to our inner selves, daily direction of thought to what is most worthwhile in life.