^^ Nice work, kir4ee, and you showed some excellent resourcefulness; thanks for sharing!
I would recommend going for it.
Originally Posted by kir4ee
If things start getting out of hand, especially if a nightmare is forming, it might be time not to abandon the dream but to relax and re-establish your presence in the dream, and your knowledge that everything in the dream is You, and can ultimately be tempered by your own will, no matter how scary the imagery.
For instance, if you find yourself in that ocean again (and you might, because imagery like that can have a tendency to repeat), instead of being concerned about being underwater, or about the depths below, take a moment to pause and remember where you really are (in a dream, with your sleeping body safely in bed), that there is no water, no dark depths, there is only your dream. Then quietly regather your self-awareness, which is often ebbing when nightmare imagery appears. Just sort of hang there in the water, you might even close your eyes, and thinking about nothing at all, except maybe that you are in a dream and all this imagery is a creation of your own mind, and not forces separate from you.
You also might take a moment to notice that you have no trouble breathing in the water, which helps a lot. Instead of looking up or down, try looking off to your sides, and while doing so wonder what cool things might be just off in the distance in the water. And, of course, never concern yourself with things like SP, especially during the dream; that is just a waste of time and emotion. It is truly a rarity, but if SP happens, it happens; it is harmless, short-lived, and occasionally leads to another LD, so there is absolutely nothing to fear... and it should never be given a priority during the dream.
Speaking of that, there really is no need to expect that you might one day have a lucid nightmare -- that only welcomes their eventual arrival. Instead, try knowing that a lucid nightmare need not ever happen, because if nightmare imagery begins to form, it is in your power to make it go away with a thought.