I found this video by Dr. John Piper both interesting and thought provoking.
We do not always know how to respond to our sorrow. Because we are in the middle of our jumbled up thoughts, we struggle to make sense of what’s up or down. But, that does not mean that there is not a way to mourn that is explicitly Christian. That we can’t be reminded and encouraged in and through the pain and grief we feel.
I find Dr. Piper’s thoughts helpful. It does not matter what you are mourning, know that God is with you!