"The man whose soul is “growing” takes more interest in spiritual things every year. He does not neglect his duty in the world. He discharges faithfully, diligently, and conscientiously every relation of life, whether at home or abroad. But the things he loves best are spiritual things. The ways, and fashions, and amusements, and recreations of the world have a continually decreasing place in his heart. He does not condemn them as downright sinful, nor say that those who have anything to do with them are going to hell. He only feels that they have a constantly diminishing hold on his own affections, and gradually seem smaller and more trifling in his eyes. Spiritual companions, spiritual occupations, spiritual conversation, appear of ever-increasing value to him. Would any one know if he is growing in grace? Then let him look within for increasing spirituality of taste."
J.C. Ryle, Holiness