Sun

If you were to gaze too long at the sun, you would be blinded.

Be in its warmth too long, you would be burned.
Come too close, you'd be destroyed by its heat.
Go too far, and you'd waste away in the cold.
But reflect it's light and you feel just right.
Though there is a time when the moon does not do just that.
It's in darkness, cold and alone but nothing you can do about that.
Because you'll turn anew and feel just as warm
as when you faced the sun just like before.