One way to help integrate ("into-great") the energies we perceive as "light" and "dark" is to stop labeling them as such. Notably, our language reflects our belief systems. If we can simply perceive things and notice what is without judgment, we open our consciousness to Oneness. The All That Is includes both "light" and "dark" energies, and it is typical (reactive) for us, as humans, to assume light is "good" and dark is "bad." Yet, take a moment to think of the numerous life situations where the opposite is true. (Mushrooms, sunburns, viewing stars at night, and so on.)
Nature herself honors, utilizes and accepts both "light" and "dark - as she is both - so why don't we?
When we can allow all energies to be loved within us (both our gifts, let's say, as well as our shadows), we can learn to allow them to exist in others. In so doing, our judgments of others' lives and choices begin to dissolve and we find compassion (which is not a righteous pity). Love allows seemingly "polar opposites" to find harmony and balance within and around us, and perceptions of duality disappear.
When we send anything Love, it raises its vibration to higher frequencies. Imagine sending all aspects of ourselves Love. Imagine sending everything outside of us Love. Judgment, on the other hand, is an aspect of separation. We can choose, "Do I want to Love or do I want to judge?" Both are perfectly understandable options, so there's no "right" or "wrong" answer (unless, of course, you perceive one); simply neutral choices.
As duality shifts into neutrality, we free ourselves from worrying about the "dark" overcoming the "light" ...and vice-versa.
AND, if we choose, we can stretch our minds to perceive (actually allow our hearts to remember) that ALL IS LOVE. However, for now, most of us have a knee-jerk fearful reaction to such a bold statement... but, not to worry, it's perfectly human.