Shadow of a Being

You play as my heart throughout a most painful game,
As you seem to hit every obstacle imaginable
While I play as a shadow throughout the same game,
Doing not but existing; destined to lose

In the end, Victory finally comes in the form of your Happiness
After all, that is the sole reason I even subsist
Nevertheless, you move forward with your life,
Oblivious to the shadow that’s always been at hand
So here I sit, stuck in the darkness
Searching for light that I fear does not even exist