Ark Work goes back to the Pythagorean injunction to escape fate.  But in a stricter sense we have to consider it to be a cluster of practices that continue the abrahamic religious tradition beyond Christianity and Islam under modernity.   These practices are united in that they are neither secular nor religious in the traditional sense, but they are also not merely 'spiritual' or 'occult'.   The problem with modern occultism is that it regresses to pre-Christian modes of spirituality (Heathen or pagan charisma) rather than transcending + including the truth that Christianity gave to the world.  The trouble with secularism is that it is trapped inside the cage of hyperborean reason and does not tap into true freedom or yield truly felt experience of the absolute.  The True Vine continues to bear new fruit.