ייִדישער מחשבֿה אויף משלי 18:14

Therefore tend to her matters always, more than you tend to the matters of your body, and know, that it is easier to heal your body from the worst of the diseases that befall it, than it is to heal the soul from the sickness of the yetzer (evil inclination) when he overpowers it, as the wise man said: "The spirit of a man will sustain him in sickness; but a wounded spirit who can bear?" (Mishlei 18:14), and "above all things guarded, watch over your heart" (Mishlei 4:23).