Musar zu Tehillim 139:14

The twenty-third thing a person should remember is the greatness of God, Blessed be He. And he should understand the creation of the world, the large things and the small, and revolving of the spheres, and the nature of the sun and the moon and the stars, and the falling of the rain, and the blowing of the winds, and many more wonders too numerous to relate. Inasmuch as a man sees these marvels constantly, he does not wonder in his heart about what he sees, but when there is an eclipse of the sun or the moon, then he wonders exceedingly because this is not usual and customary as the circling of the sun each day from east to west. Therefore, look upon them and let it seem as though you have never seen these wonders before, and let them appear as though you were blind heretofore and that now you have opened your eyes. Then, this will become most wonderous in your eyes. So must you do with yourself, every day, and thus did David say, "Wonderful are thy works; and that my soul knoweth right well" (Ps. 139:14).