When we look at the mourning on Tisha b’Av, we are actually mourning the disconnect with our spiritual source. Destruction of the temple in Jerusalem meant that the direct revelation of the light of God was no longer available to the people as a whole. Gradually living without the direct revelation of God in our lives has become the norm. We need to remember that this is not normal, and each one of us needs to mourn and long for a direct connection with the Creator in our mind heart and soul. This is the rebuilding of Jerusalem within ourselves.