The other producer of old age is habit: the deathly process of doing the same thing in the same way at the same hour day after day, first from carelessness, then from inclination, at last from cowardice or inertia. Luckily the inconsequent life is not the only alternative; for caprice is as ruinous as routine. Habit is necessary; it is the habit of having habits, of turning a trail into a rut, that must be incessantly fought against if one is to remain alive.
Edith WhartonThere was once a little girl who was so very intelligent that her parents feared that she would die. But an aged aunt, who had crossed the Atlantic in a sailing-vessel, said, 'My dears, let her marry the first man she falls in love with, and she will make such a fool of herself that it will probably save her life.
Edith Wharton