Nice write. The sun does controls our moods, and the night feels dark, does it not! But do not forget that to some of us writers the moon is lovelier, less brighter (shiny) and calming to our troubled soul. And if you crave for the sun again, wait 12 hrs (or some time), and you will see a new sun (or new love) reappear in the morning sky. So the message in your poem can be expanded if you wish to include do not loose hope, destiny will find its way, to make it powerful, hopeful and not sad. I like your expressions in this poem.

Thank you very much.