It's okay that you've lost your light; maybe it was never yours to begin with. Maybe you never had a light of your own. But it's okay. You're in good company. I know the deepest things about you without even knowing you.
I don't know your name, but I know how much you craved to have someone else know it. I don't know your voice, I know how horrible you felt when someone ignored it. I don't know what you do for a living, but I know the hurt you felt to have your dreams ridiculed by people didn't see your potential.
You might not see very well, but you can see eternity. You might not sing very well, but you express your soul better than anyone.
But I don't know everything about you:
The remnants of your heart that are still missing; the hours of anxiety and uncertainty; the night you so desperately craved to have someone there to hold you; or how it felt the receive the last goodbye from the person you once thought was your soul mate.
When it was all said and done, you felt like you were defective. But really, it was them. They saw delusion where you saw dreams. They saw a freak when you saw creativity. They saw darkness when you saw light.
You didn't lose your light. You just needed to change the bulb.