you don't need to believe anything
just do this
"be prepared for the worst hope for the best"
this is where most people fail, they exit their bodies unprepared thinking is all good after all the brainwashing they got from this life by listening to possessed spiritual/demonic teachers priests etc or even worse they didn't expect to still exist and don't know what to do just like a little kid ready to trust anyone that comes close, both have the same end.