This operation often takes place spontaneously, as when a problem left unsolved the night before yields its solution apparently by an inspiration when we arise in the morning. "Sleep on it" still remains the best counsel for those in perplexity, but they should preface their slumbers by the positive autosuggestion that on waking they will find the difficulty resolved. In this connection it is interesting to note that autosuggestion is already widely made use of as a means of waking at a particular hour. A person who falls asleep with the idea in his mind of the time at which he wishes to wake, will wake at that time. It may be added that wherever sleep is utilised for the realisation of particular suggestions, these suggestions should be made in addition to the general formula, either immediately before or immediately after; they should never be substituted for it. With some afflictions, such as fits, the attack is often so sudden and unexpected that the patient is smitten down before he has a chance to defend himself. Particular suggestions should be aimed first of all at securing due warning of the approaching attack. We should employ such terms as these: "In future I shall always know well in advance when a fit is coming on. I shall be amply warned of its approach. When these warnings occur I shall feel no fear or anxiety. I shall be quite confident of my power to avert it." As soon as the warning comes--as it will come, quite unmistakably--the sufferer should isolate himself and use a particular suggestion to prevent the fit from developing. He should first suggest calm and self-control, then affirm repeatedly, but of course without effort, that the normal state of health is reasserting itself, that the mind is fully under control, and that nothing can disturb its balance. All sudden paroxysms, liable to take us unexpectedly, should be treated by the same method, which in Coue's experience has amply justified itself. Nervous troubles and violent emotions, such as fear and anger, often express themselves by physical movements. Fear may cause trembling, palpitation, chattering of the teeth; anger a violent clenching of the fists. Baudouin advises that particular suggestions in these cases should be directed rather against the motor expression than against the psychic cause, that our aim should be to cultivate a state of physical impassibility. But since a positive suggestion possesses greater force than a negative, it would seem better to attack simultaneously both the cause and the effect. Instead of anger, suggest that you will feel sympathy, patience, good-humour, and consequently that your bodily state will be easy and unconstrained.