At physical death man loses his consciousness of the flesh and becomes conscious of his astral body in the astral world. Thus physical death is astral birth. Later, he passes from the consciousness of luminous astral birth to the consciousness of dark astral death and awakens in a new physical body. Thus astral death is physical birth. These recurrent cycles of physical and astral encasements are the ineluctable destiny of all unenlightened men.
If you have a strong mind and plant in it a firm resolve, you can change your destiny.
The universal law of karma ... is that of action and reaction, cause and effect, sowing and reaping. In the course of natural righteousness, man, by his thoughts and actions, becomes the arbiter of his destiny.