2 Corinthians 4:15 For all things are for your sakes, that the abundant grace might through the thanksgiving of many redound to the glory of God.
Our sufferings are not wasted. God uses them to minister to others and to bring glory to His name. It's easier to sympathize with someone when we've had the same problem.
When I worked in the Neurosurgery Office a lady patient told me she had just been diagnosed with breast cancer. Seeing her concern, I told her how God got me through the same disease. When she returned for a follow-up appointment she said, "Thanks for what you told me. I needed to hear it."
When the going gets rough God give us the perfect amount of grace---day by day as needed. Down the road we will be prepared to share our experience for His glory. God has a purpose in everything. Thank God for grace.