The only thing that feels worse than being stuck in a situation that makes you unhappy is realizing that you are not ready or willing to change whatever it is.
Anything that lights your world leaves it dark once it's gone.
If you love yourself the most at your happiest moments, there is no reason not to be fond of who you are in the dark.
Just remember that those who feel profoundly depressed are those whose happiness is likewise intense. What's so wrong with that?