People send us darkness all the time. Some do it overtly and clearly do not have our well being in mind. Others do it more subtly and painfully. The darkness comes from those we love, as a relationship ends or a wrong is done to us by someone we care about. These painful things seer their image into our consciousness and change us forever. Yet they leave us with a gift if we care to look.
The time required to see the value can be significant, but should you have the patience you might just find some gold shining in that dark gift. You will notice how you shine when the darkness is behind you. Many great characteristics are molded on the fires the darkness brings, intelligence, caring, understanding, and kindness to mention a few.
The dark is a gift like all other things, it is exactly what you decide that you want it to be.