I was so much in the habit of having Albertine with me, and now I suddenly saw a new aspect of Habit. Hitherto I had regarded it chiefly as an annihilating force which suppresses the originality and even the awareness of one's perceptions; now I saw it as a dread deity, so riveted to one's being, its insignificant face so incrusted in one's heart, that if it detaches itself, if it turns away from one, this deity that one had barely distinguished inflicts on one sufferings more terrible than any other and is then as cruel as death itself.
Marcel Proust, The Captive & The Fugitive
change, habit, loss, routine