A person's daily life can be seriously affected by sleep disorders. People who lack sleep usually experience stress and fatigue all day long. Lack of sleep can also make a person feel sleepy all day long and can easily be frustrating. Because of this simple hypersensitivity, people are prone to aggressive behavior that can harm othersA person's daily life can be seriously affected by sleep disorders. People who lack sleep usually experience stress and fatigue all day long. Lack of sleep can also make a person feel sleepy all day long and can easily be frustrating. Because of this simple hypersensitivity, people are prone to aggressive behavior that can harm others..