There is more than one form of light. Stare at a flame and you will see.
Close to the wick burns a dark light—the light of carbon burning.
Further from the wick is a bright, dancing light—the light of fire shining.
In life, too, there is a dark light. From your struggle with bitter, hard times, you grow and learn.
Out of that dark light a bright light shines. Having tasted bitterness, you now dance with the sweet joy of a mitzvah.