There is no other means to enter the Upper World other than to mechanically observe the conditions that are required of us. The Creator does not demand that we switch from egoism to altruism, because this is impossible. He demands that each of us does what is in his power, that is, for each person to show everyone else that he is willing to love them ( he does not love them, but he is willing to love them ) for the sake of achieving spirituality.
There is nothing else other than to achieve love, that is, to exit out of oneself and to take care of other people. There, inside of this feeling for the other souls, we reveal love for the Creator and we perceive union with Him.
http://www.youtube.com/watch?v=KbsdXQA-DRQ