Instability is much less important in the adolescent stage. Many a parent has been in despair over his adolescent children. "Nothing good ever can come out of that boy. He is too unstable," the parent is apt to say. Yet great good often does come out of such a boy, simply because he grows older. Such a boy is generally between thirteen and nineteen. Tremendous physical changes are going on, which are rather more than he can manage. Hence he becomes for a time unreliable, capricious, moody. There is almost no degree of mental instability and unsatisfactory conduct which may not wholly disappear as we get past the adolescent stage. On the other hand, the older a person is the more serious the outlook in a case of instability. A woman in the vicinity of sixty drifted into my hands some years ago, after having been the round of doctors whose diagnosis was essentially instability. Although I labored very long and prayerfully with that individual, I cannot say that I produced any considerable effect. Remember always the possibility that such instability is due to drugs. Among the most unstable people are the morphine-takers, and because that has among other symptoms concealment and lying, it does not easily come to light. In the evening the morphine-taker is full of prowess, is full of hope, ready to make engagements for nine o'clock the next morning. But he almost never turns up for that engagement the next morning. This morning depression is common also in many other diseases, such as neurasthenia and that rare disease, anemia. The anemic patient has a hard time getting up in the morning, but it is the fault of his red corpuscles and not of his character. Another phase of instability is _abnormal suggestibility_, abnormal openness to influence or "suggestion" in the psychological sense. I cannot count the number of fond but foolish mothers who have said to me about a child, "John is a good boy, only he is weak. He gets led astray by his companions." Everybody is and ought to be somewhat suggestible, normally suggestible. The man who is not suggestible is the person with a monomania, who can see nothing but his own view, is stupidly attached to one set of ideas and so cannot learn. But one can easily be too suggestible. Over-suggestible people run after every craze, are impressed with each new religion, or are tremendously excited with each new friend and think of each new experience: "Ah! This is what I have been looking for all my life. Nothing else matters." This is especially common at the adolescent age, but it is a danger for all of us, men and women of every age. We get carried away by popular crazes, by influences, by suggestions, so that we cannot remember the good that there was in our previous beliefs and interests. If so we are mentally unstable in this respect.