One will awaken naturally. Situations such as being trapped in a
dream, dreaming of being a dream and being unable to wake up
through successive layers of dreams only occur in science and
fantasy fiction.
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This sort of dream-within-a-dream is an effort of your own
subconscious mind to tell you to "wake up" and to face your real
situation as it is. The point of the dream is that you think
terrible things are happening to you that are not nearly as bad as
you think. Your own mind is urging you to stop exaggerating your
problems and to recognize how well you are doing.