I hope you don't mind me barging in boots and all, but I really feel that I need to tell you this... the nightmare shadow creatures and the clawing and groping at your insides are all of the hurts and disappointments that you have shoved away in the depths of your soul since you were a child. They have grown strong and angry because you hid them away, even from yourself.. they needed to be acknowledged and let go, and only you can do that. If you try to keep them locked away, the nightmares are only the beginning of what you will suffer .. they will make you sick and weak, physically and spiritually. and then they will escape anyway. Better to do now what you know, as an empath, that you need to do. Get grounded and centred, and give yourself permission to let go of all the pain, the guilt, the disappointment and despair. Once they are gone, you will be able to feel peace, for the first time in your life. ..... I know, because I had to do it myself.