Historically speaking, many practicioners of magic and magick have used meditation of various sorts (be it isolation or yoga, etc.) in order to become more attuned to themselves. This is a necessary part of 'the work'. If signs and symbols start to well up from the subconcious and intrude on 'normal' everyday conciousness, this is probably a result of the person not being more aware of themselves - they are less attuned to themselves.