Well, now, dear friends, why do you and I ever get stale and flat? Why, it is because we get away from him who says, ‘Behold, I make all things new.’ The straight way to a perpetual newness and freshness of holy youth is to go to Christ again, just as we did at the first. A better thing still is never to leave him, but to stand for ever at the cross-foot delighting yourself in his all-sufficient sacrifice.
They that are full of the joy of the Lord never find life grow weary. Getting near to Christ, you will partake in his joy, and that joy shall be your strength, your freshness, the newness of your life. God grant us to drink of the eternal founts, that we may for ever overflow.”
— Charles Spurgeon, "Sermon for New Year's Day"
HT: Of First Importance