Personality Improvement by Nutrition. Food nutrition, Eating useful both 5 groups focused on eating fruits and vegetables, eat water 6 - 8 glass per day and should exercise regularly. But don't overdo it too, in order to work. The body and hormones of systematic work together should sleep enough, do not sleep too late 4 p.m. bed rest enough 6 - 8 hours a day Refrain from drinking alcohol or smoking drugs, it will destroy the health.