Why I am becoming and End-of-Life Doula

What happens? Is it painful? Is it scary? What happens to the people left behind? Where does your soul go? Does your soul go anywhere at all?? I have always been inquisitive by nature, but in this particularly, I NEED to know. I NEED to know how to help, what to do to make the transition for those who are about to depart from this world peaceful, and without fear, as their soul leaves their earthly form and into their celestial one.