"Grief drives men into habits of serious reflection, sharpens the understanding and softens the heart"-John Adams
Grief is a mental and emotional anguish that none of us can avoid no matter how hard we try to. Grief is just as certain as death is! It will most definitely come and none will be exempt because it doesn't discriminate.
Weeping may endure for a night but joy comes in the morning (Psalms 30:5 NIV). I'd heard this several times throughout my life and had even recited it to many who were mourning. Although I had an understanding of this verse it didn't really sink in for me until I endured the lose of my daughter last year.
In Proverbs 14:10 CEV the Bible tells us that no one else can really know how sad or happy we are. How true this is! No matter what my family and friends did or said to comfort me they would never be able to understand what my heart was feeling. In 2 Samuel 12:14-23 David expresses this very verse perfectly.
Even though no other human being will be able to competley understand what you're going through; we can all take comfort in knowing that there is one who does understand. He not only understands but takes great pride in comforting us too. So pile all of your troubles on His shoulders and let He'll carry them (Psalms 55:22 TM).