Daily, we swim in sin, death, pain and suffering. Where is the joy in that? It can be found at the cross! (The cross—itself a representation of suffering.) It is there that Christ took upon Himself the ultimate curse of sin. While we bear the pain of where our shackles once tore into our skin (the consequence of sin here on earth), our chains are gone! We've been set free! Because of Christ's work, we have hope that this “light momentary affliction is preparing for us an eternal weight of glory beyond all comparison.” Our final victory over sin will culminate when we unite with Christ in heaven.
In your sorrow, press deeply into Jesus. Spend time in His word daily. Commune with Him in prayer. Spend time with His people. And serve Him in obedience.