What do I need to know about Spiritual Rebirth

I had been meditating on the question, "What do I need to know about Spiritual Rebirth?"

I fell asleep while meditating and had this dream about it:

I was taken to a sweat lodge and there my Teacher was waiting for me. I came into the Lodge and my Teacher ritually cleansed me with sage water, and had me drink cedar tea or water. Then he closed the flap and here is what he said to me in the dream:

Rebirth is like being in this sweat lodge. Here you are once again in the womb of your Mother. All that you know has been left outside. In this dark warm place you are back to the embryonic state. There are no yesterdays and no tomorrows here. Here you are in the moment and when you emerge you are in a sense reborn, renewed, cleansed of everything that does not serve you. In this same vein no rebirth comes without its cost. Here again in the sweat the intense heat causes physical discomfort. There is no rebirth without some sort of mini-death.
To clarify what I mean look at the cycles of life. See the Trees how they change with the seasons. Their leaves fall in winter,they lay themselves bare in the winter, and bloom in the spring. Look at the plants that grow from a seed, bloom and die only to repeat the process again. Take a moment to ponder the struggle of a caterpillar into a butterfly. Notice even how the stars themselves will live and die, turning into super novas or black holes in time. Watch and see the process of rebirth, death and renewal all around you. Note how all in nature gives itself to this without reservation. It is in watching this you can begin to understand the nature of spiritual rebirth. It is a type of death and dying in order to be reborn anew. In order to be spiritually new or reborn a person must die to ego, self, and all that defines who and what they are. It is a a metamorphosis that at times can be painful, and that continually leads you into "becoming.".
There is a trust in Spirit here in this process of rebirth. Fear has no place in this transition. It is a rebuilding from the ground up. It is a tearing down of "self" and the "I am". It takes courage to walk through this process, and it is not one that should be undertaken lightly.