Back in your dark room, open the door to the room that has the light on. Answer this question. The light can penetrate the dark. But the dark cannot penetrate the light. The light is always more powerful.
Darkness is simply an absence of light.
In order for you to let your light shine you have to turn on your inner light. You have to choose how you are going to be. You have to choose your attitudes, your emotions, your course, your state of mind, your way of being. Let your light shine. Shining is a gift that we all have.