"you will find that anything or nothing is sufficient to attract his wandering attention. You no longer need a good book, which he really likes, to keep him from his prayers or his work or his sleep; a column of advertisements in yesterday's paper will do. You can make him waste his time not only in conversation he enjoys with people whom he likes, but in conversations with those he cares nothing about on subjects that bore him. You can make him do nothing at all for long periods. You can keep him up late at night, not roistering, but staring at a dead fire in a cold room. All the healthy and outgoing activities which we want him to avoid can be inhibited and nothing given in return, so that at last he may say, as one of my own patients said on his arrival down here, “I now see that I spent most of my life in doing neither what I ought nor what I liked”. The Christians describe the Enemy as one “without whom Nothing is strong”. And Nothing is very strong: strong enough to steal away a man's best years not in sweet sins but in a dreary flickering of the mind [...] It does not matter how small the sins are provided that their cumulative effect is to edge the man away from the Light and out into the Nothing. Murder is no better than cards if cards can do the trick. Indeed the safest road to Hell is the gradual one — the gentle slope, soft underfoot, without sudden turnings, without milestones, without signpost."
I really saw myself in this quote and in what a sad condition I was living my life, not in great sins but in a state of lethargy.