The Old Will Dream, the Young See Visions: Renewal of the Mystical

I'd like to explore the mystical, not as an expert, but a student.  Lately I've been inspired by Evelyn Underhill's insights in her book, Mysticism: A Study in Nature and Development of Spiritual Conscious which I quote in this podcast.  My sense is, that despite the darkness of the age we live in, something of the Absolute wishes to break in, to rearrange our consciousness.  When this happens, the old dream and the young see visions.  What might it look like for modern people, spiritual - religious - not-so-religious, to open up to the possibility of the transcendent, so that our present mode of consciousness, our small egoic frame, might grow?  What if Reality is not what we thought?  The mystics left us a few clues for how to listen and how to be.