We can all feel drained from time to time, especially if we've been working particularly hard to finish a key project. The same can be true if we've struggled with relationships, have lost someone we love or are struggle to find or hear God when the going gets tough. At times like this we need a renewed sense of spiritual purpose. We aren't going to get that without a fresh filling of God's Spirit that can only come from a close encounter with God himself. However hard we may have worked, whatever sacrifices we might have made - none of that can "buy" our acceptance with God. We have His love anyway but His greater blessing will come when we commit ourselves fully to serving and following Him - then we will see fruit.