The Evening Hours.—The use of the hours after the evening meal is an extremely important factor with regard to insomnia. If the patient tries to read the paper or some conventionally interesting magazine or book, thoughts of the possibility of his not sleeping will surely obtrude themselves and he will fail to get to sleep when he lies down. As a matter of fact, he will have so disturbed himself as to predispose to insomnia. Some quiet occupation, interesting yet not too interesting, that diverts the mind from the thoughts about itself and about sleep possibilities, yet does not excite it, is the best possible auxiliary and preparation for sleep. Prof. Oppenheim has, as usual, said this very well in his "Letters to Nervous Patients," to which we have turned so often:
A great deal depends upon the right use of the evening hours. On no account let yourself occupy them with anxious forebodings about the night. But, on the other hand. It is not at present wise to take up your mind with too exciting thoughts, as the strong after-impression of feeling and fancy may counteract the tendency to sleep. You must find out for yourself whether a quiet game (cards, halma, chess, or patience), the reading of a serious or an amusing book, the perusal of an illustrated paper, or a chat with a friend will be most certain to give you that tranquillity of mind through the vestibule of which you will pass into the temple of sleep.
Direct Sleep Suggestions.—Many plans are suggested by which people are supposed to be able to get to sleep. A favorite and very old suggestion is that of counting sheep go over a fence or something of that kind that is merely mechanical, yet takes the mind from other thoughts. As a rule, any plan involving mental occupation that is meant to produce sleep is likely to react and do harm rather than good. Sleep must not be wooed deliberately but must be allowed to come of its own sweet will. It is extremely important that exciting thoughts and bothering interests be put aside, not at the moment when we want to go to sleep, but some considerable time before. This is not always an easy matter and often requires careful planning. It is worth while doing it, however, in order to secure sleep promptly and not allow a prolonged period to pass while one is lying awake, for if nervous irritability ensues wakefulness is still further prolonged and the patient may begin to toss and so disarrange the bedclothing and disturb himself as to prepare for several hours of sleeplessness which would not have occurred if there had been an appropriate interval given to preparing the mind for sleep.
Diminishing Solicitude.—Patients must not be too anxious for sleep. If they worry themselves over the possibility of not sleeping then they will almost surely disturb their sleep, or at least delay its coming. The ideal state of mind is not to bother one's head about it, to lie down habitually at a given hour, compose one's self to sleep with assurance and then wait its coming without solicitude. Many people will say this is not easy to do, but habit makes it easy. Most of our animal life is lived by habit. We are hungry at certain times by habit. Our bowels move at a particular time by habit. We can sleep by habit. If we try to use our intellect solicitously with regard to any of these habitual functions we do much more harm than good. The more anxiety there is about sleep the more likely it is to be disturbed. When the habit of sleep at a particular hour has been broken the best way to regain it is to lie down at that particular hour and then wait patiently for [{661}] the advent of sleep. If impatience gets the better of us sleep is kept off and will not come for hours. If the patient can lie down feeling "Well, if I do not sleep now I will to-morrow morning" then there is usually little difficulty about sleep.
Dread of Consequences.—Many people who suffer from insomnia fear that their loss of sleep will injure their intellectual capacity or make them prematurely aged, or drain their vitality so that they will not have health and strength of mind and body when they grow old. This adds to their solicitude about themselves and inveterates their condition. There is only one answer to this dread, which has no foundation in what we know of actualities, and that is, to tell them the experience of certain persons which absolutely contradicts such a notion. One distinguished physician who, at the age of seventy-five, is writing books that are attracting widespread attention and is doing an amount of work that many a younger man might envy, has told me of all that he suffered from insomnia between the ages of thirty and fifty-five. His mental productivity was much hampered at that time by his wakefulness and anxiety with regard to it. He feared the worst as regards advancing years, yet he is in the full possession of mental and bodily strength well beyond the Psalmist's limit. His is not an exceptional case, for there are many others in my own personal knowledge. Virchow once told me of years when he suffered from insomnia, yet he lived to be well past eighty and then died, not from natural causes, but from an injury. A man who accomplished an immense amount of work in his day in the organization of a great university suffered from insomnia in his younger years to such a degree that his friends and even he himself feared for his mental stability, eventually overcame this symptom completely and went on to years of great active work, dying in the end, not from his head, but his heart. We have records of a number of such cases. Few of the hard students of the world went through life without having some bother from insomnia. It is well-known, however, that many of the great thinkers, investigators and discoverers in philosophy and in science have lived long lives well beyond the age of the generality of mankind.
Mental Diversion.—The main thing is to banish the thoughts of one's ordinary occupation as far as that can be accomplished without laboring so intently at this as to give the mind another bothersome occupation. Many people find that a game of cards just before going to bed takes their thoughts off business and worry almost better than anything else. Something like this is needed in many people. Most people must not write for some time before retiring, because writing proves so absorbing an occupation, as a rule, that the mind becomes thoroughly awake and then remains so for some time afterwards. Reading is better, but the reading must be chosen with proper care. An exciting story, for instance, may serve to keep one awake for hours, as everyone knows who has tried and found himself still reading at three in the morning after having begun an interesting book. The reading of works of general information, of travels, of description of places, where it is comparatively easy to stop at any place, of short stories which do not hold the interest beyond a brief period, is much better. Osler's recommendation to have a classic author beside one's bed to be read for a few minutes every night after retiring as a preparation for sleep is an excellent remedy for the milder forms of insomnia, as well as a stepping-stone to scholarship.
William Black in one of his books has a description of an old man who had suffered from insomnia very severely until he discovered a plan of his own to enable him to get to sleep. This consisted in reading the Encyclopedia Britannica. He began at the beginning and read straight ahead, article after article, and volume after volume. He never even by any chance departed from this routine either to look up cross references, or read anything further about men who were mentioned in the article he was going through at the moment and whose names occurred in another volume. He read straight on until his eyes got heavy and then he went to sleep. At the time he was introduced into the story he had already read the whole work through twice and was, I think, at "D" on the third reading. He had had considerable bother about getting to sleep before he adopted this plan, but it proved an always efficient somnifacients. There is a story about an old American farmer who said that he read the dictionary over and over again for the same purpose. The stories were short and disconnected, but they never bothered his sleep, while his wife and daughters were sometimes kept up more than he thought was good for them by their interest in the story paper.
Treatment of Early Morning Wakefulness.—With regard to the disturbance of sleep in the early morning hours there are certain instructions to patients that have always seemed to me extremely important. Most of the patients who complain of wakefulness in the early morning hours are really suffering from hunger at that time. This is especially true with regard to those who stay up rather late at night. They have their last regular meal about seven or a little earlier, they get to bed at eleven or even later, and some of them, following the old maxim that eating before sleep is likely to disturb it, go to bed on an empty stomach. Whenever more than four hours have passed since the last meal the stomach is quite empty, and after the preliminary fatigue has worn off and the sleep has become lighter and the lack of nourishment more pronounced a vague sense of discomfort in the abdominal region wakes them, though most of them do not realize that they are disturbed by a craving for food. In a large number of these cases I have found that the recommendation of a glass of milk and some crackers, or some simple cake, just before retiring does more than anything else to lengthen sleep and prevent what has been learnedly called matutinal vigilance.