Watch yourself and see if you are not in the habit of moving your hands, thumping something with your fingers or twirling your mustache. Some have the habit of keeping their feet going, as, for instance, tapping them on the floor. Practice standing before a mirror and see if you are in the habit of frowning or causing wrinkles to appear in the forehead. Watch others and see how they needlessly twist their faces in talking. Any movement of the face that causes the skin to wrinkle will eventually cause a permanent wrinkle. As the face is like a piece of silk, you can make a fold in it a number of times and it will straighten out of itself, but, if you continue to make a fold in it, it will in time be impossible to remove it.
If you are in the habit of worrying over the merest trifles, just concentrate on this a few minutes and see bow needless it is; if you are also in the habit of becoming irritable or nervous at the least little thing, check yourself instantly when you feel yourself becoming so; start to breathe deeply; say, "I will not be so weak; I am master of myself," and you will quickly overcome your condition.