The term "Enlightenment" can have this awfully snooty, self-sufficient, self-reliant note. In practice, according to reports, it turns out that the path of enlightenment requires substantial letting-go, relinquishment, relaxation, humility, and surrender, to reach the mental poise of "equanimity", the Middle Way. So, the question is, once having relaxed and surrendered into this equanimity, what causes the arising of enlightenment? I think, this is where Western traditions will answer, "why, it is by Grace, not by Works", as works at this point would be grasping, destroying equanimity.
Esoteric schools, Eastern (Sadhanas in Vajrayana, Shingon, Tantric traditions) and Western (such as the Abramelin working found in Magick) all act out this interplay between works, surrender, and grace.
Another thought: who is seeker, who is sought? If God is putting out the news through prophets and scriptures, then is God not seeking contact, calling out? Isn't God taking the first step? And if the seeker, having read the scriptures and followed the teachings, and approaching God, can still only go part of the way, God hurrying towards them to meet them, as in the parable of the prodigal son, or in Michelangelos mural in the Sistine Chapel of the creation of Adam - doesn't this complete and dissolve the seeker/sought dualism?