Salute the Divinity within you, there is no enemy inside. See the light in everyone you meet, see the light in everything around you. We are all bound to a spiritual oneness, when we understand this the darkness fades.
It is our energy locked in all the occasions, emotions, fears, hopes & pains, people & places in the past that draws us back & we are not free. As we are energy creations, we saturate with our energy all the place & situation in the moment, so we have to unlock/free all that energy & recollect these our parts from the past, also have to free all non-our energy that is in us. It is basic & important practice in the path of the warrior of knowledge (ancient Toltecs).