its call incarnation over and over to learn the necessary lessons. some learn faster than others. there is only one "end", either your uncreation if you choose against eternal life, or eventually your perfection in glory. each makes their own choices. You cannot perfect yourself into a 6th stage spirit being in a single life. but those aware on this very negative planet can make better than average progress in this life, thus moving at a faster rate. Negative beings are given eternity to choose the light and truth and change of their behaviors if necessary.