[TraineeHuman]

Ortho, my understanding is that everyone on the planet already lives in the 4D and 5D realms at least, if not also higher D's in many cases. Unfortunately, many people occupy themselves so much with the 3D issues that they push all their 4D and 5D consciousness into their subconscious or their unconscious mind, at least while they're awake. Not a good move.

When a person goes to sleep, they initially go into the upper levels of the 4D world -- to which they'e no stranger. There, they mostly communicate with some of the people most important in their life at the time. Many also do healing work or counselling work on whoever needs it -- often somebody on the other side of the world who's dying or suffering or whatever. They may also travel e.g. to other planets to take classes.

From the 4D world, you can go on into higher Ds. You can also go into the lower, or negative realms of the 4D world. My experience and that of others I've talked to has been that that's the only place where you'll encounter negative hostile beings or thought-forms. And as far as I can tell, it can actually feel much more negative than what we experience while awake. I find it's decades since I've ever gone there much. That's because a basic principle in all realms from 4D on is that like strongly attracts like. The moral is, you'll only encounter the nasties if you're allowing negative feelings to dominate your heart that day.