On Joy and Sorrow

I love the way that this section opens up when it says "Joy is your sorrow unmasked". This is an interesting way of viewing the two emotions together. I personally feel that the two are not really linked, because during the times of sorrow I find no joy anywhere near me. I think that when someone is upset, nothing else seems like it can dig you out of that dark whole and as if joy is far far away, not just sleeping directly next to you. In my life there is either one or the other it is hard to be in the middle of joy and sorrow. I am confused how the Prophet keeps saying that they are inseparable, because obviously you get different feelings from both emotions and learn different things. It takes a lot to switch over your mood to make one hold a greater weight than the other.