The practice of self-love is one of awakening and keeping the mind alert so that the unconsciousness does not hold the mind. Dark forces can come, but self-love would always prevent and protect you, like the immune cells of your body instantly attack any foreign body and kill it. So also self-love is like shield, an immune cell of the brain, or mind; you instantly allow your positive light to light that dark area and the dark forces simply flee. Bodhi Shuddhaanandaa