"And He has said to me, 'My grace is sufficient for you, for power is perfected in weakness." Most gladly, therefore, I will rather boast about my weaknesses, so that the power of Christ may dwell in me."
2 Corinthians 12:9
God does not always answer our prayers the way we would like. Like Paul, we may ask the Lord to remove the pain we are enduring, and He may decline. It is His sovereign right to do so. For the Lord knows best what we need. Perhaps our greatest need is spiritual growth. And to that end we may need to be in a place where we can only survive by leaning on His grace. It is always sufficient. The fact that we rise the next morning to face another day shows this is so. We don't know what Paul asked the Lord to remove, but we do know that the Apostle boasted in his weaknesses to the glory of Christ.