I've done this in deep meditation, not in a dream, and it was the final step.
That fear is the last thing preventing you from reaching...
...whatever you reach.
You almost certainly will not die. But even if you do, so what? You'll have no regrets.
You need to be an explorer/risk-taker, to ever discover anything worth discovering.
This fear of death - of not returning - is what keeps people locked in ignorance.
In a way, if you cross over to where I crossed over to, you never do really come back, completely.
Some of you remains alive on earth, functioning far better than you ever did, while the real substance of what you are, is free, in everything, everywhere, always.
From what I know of you, from the content of your words, you are a good candidate.