If only experiencing spiritual joy were as easy as opening the window shutters.
One moment the room is gloomy, the next it is cheerful and bright. But then again, window shutters are a good reminder that my experience of gloom is not the same experience I would have if the sun suddenly disappeared. I may feel a certain darkness inside the house of my soul, I may not even have the strength to open the shutters, but the earth is still spinning in its orbit and I have not frozen to death in the darkness of a sunless space. The Sun is still doing its job even when my soul is shuttered.
And God is doing his job as well, however I may be feeling today. Shine on, Lord God, and sustain us by your grace, and forgive me for how often I define you by my current feelings.