Dreams are fantasies. An attempt to be as you are not. All Dreams are based in fear but as you awaken to the fact that you are the dreamer you will see something quite surprising. I'll let Jesus tell you.
"Nothing at all has happened but that you have put yourself to sleep, and dreamed a dream in which you were an alien to yourself, and but a part of someone ELSE'S dream. The miracle does not awaken you, but merely shows you who the DREAMER is. It teaches you there IS a choice of dreams while you are still asleep, depending on the PURPOSE of your dreaming. Do you wish for dreams of healing, or for dreams of death? A dream is like a memory, in that it pictures what you WANTED shown to you. An empty storehouse, with an open door, holds ALL your shreds of memories and dreams.
Yet, if you are the DREAMER, you perceive this much at least; that YOU have caused the dream, and can accept ANOTHER dream as well. But, for this change in content of the dream, it MUST be realized that it is YOU who dreamed the dreaming that you do not like. It is but an effect that YOU have caused, and you would not BE cause of this effect. In dreams of murder and attack are YOU the victim, in a dying body slain. But, in forgiving dreams is NO-ONE asked to be the victim and the sufferer.These are the happy dreams the miracle exchanges for your own. It does NOT ask you make another; ONLY that you see you made the one you would EXCHANGE for this." ACIM~Reversing Effect and Cause
Wow, that's nice. Straight to the point. Do you want a dream of fear or a dream of love and forgiveness? It will still be JUST A DREAM but one you will gladly let be replaced for you. This is God dependence. Singular subjective reality. You can't get out of a dream of fear, so the mind training exercises assist you in the transformation of your crappy dream to one happiness. And this happy dream will be transformed as well, and you will be back where you have always been, at home in Heaven.
"Forgiving dreams have little need to last. They are not made to separate the mind from what it thinks. They do not seek to prove the dream is being dreamed by someone ELSE. And in these dreams a melody is heard which everyone remembers, though he has not heard it since before all time began. Forgiveness, once complete, brings timelessness so close the song of Heaven can be heard, not with the ears, but with the holiness that never left the altar which abides forever deep within the Son of God. And when he hears this song again, he knows he NEVER heard it not. And where IS time, when dreams of judgement have been put away?" ACIM ~ The Forgiving Dream