You can only be mentally ill when your eyes are open. With your eyes open, you may be perceiving and deciding things incorrectly and irrationally. Closing the eyes, rests the brain and mind. An electric rhythm starts as soon as the eyes close and ceases immediately when they open. Activity of the eyes prevents recuperation from occurring.
Nervous energy is used up by all the activities of life.
Nervous energy is used up by physical activity, by digestion, by emotions, by thinking, by seeing, by hearing and by sex. Nerve cell fatigue or exhaustion, is deep seated and much time is required to recover. It is the lowering of vital energy in the nerve cells which leads to physical and mental trouble. Close your eyes to replenish your nerve cells and your nerves will feel better and get better. Nobody can make you mentally ill with their verbal abuse to you.