Everyone knows about the dark side of life. The Bible confirms it. "For all have sinned" (Romans 3:23). Those things may be hidden from others, but not God. He knows all and sees all. He knows the dark side of every person's life.
God knows that you are helpless to overcome your dark side. What you cannot do, God has done for you in Christ. Jesus, the light of the world, shines in the hearts of those who believe in Him. The light conquers the dark side every time. Light has power over all darkness. Light shines through the cross of Jesus. "God destroyed sin's control over us by giving his Son as a sacrifice for our sins" (Romans 8:3, NLT).
When your life is open to God, the power of your dark side has to surrender. Greater than all darkness is the power of light. The victory of light is sure. Darkness loses its power over you. The chains of darkness are broken. Jesus said, "I have come as light into the world" (John 12:46).
When believers sin, our lives are open to the dark side. Yet, that darkness cannot control us, when we confess our sins to God. Immediately upon confession, the light shines. "If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness" (1 John 1:9). What you cannot do, God has done for you in Christ. He forgives and cleanses you. The light of Christ sets you free from your dark side.