A person cannot possibly imagine the spiritual and the process of its attainment in advance. A person cannot desire spirituality while not being in it; he simply has no idea what he is supposed to long for. He can fantasize, but without actually being in the spiritual, it is utterly impossible to imagine what it is like.
Hence, the person can never agree to the inversion, which is bound to take place in him. This means an immense phase leap from the intention for one’s self to the intention for the Creator. This leap depends not on us, but on the Upper Light, which creates this property in us. However, we must come to this moment (as much as we can imagine it) by ourselves, with our own aspiration to reach this state.
Courtesy of http://www.youtube.com/watch?v=zxXwIIBlSgw