Even when I am old and gray, do not forsake me, my God, till I declare your power to the next generation, your mighty acts to all who are to come. –Psalm 71:18 NIV
Ask God to reveal how you can make a spiritual impact on the lives of others and pray for God-ordained opportunities to do so.
Pray that the Holy Spirit would empower you to share the godly wisdom you have gained over the years with others.