Personality is the reflection of Emotion
A person’s personality, largely depends on what kind of emotional state they are in right now.
If a person is in a calm state, they will be logical.
If a person is in a state of focused love, they will be passionate.
If a person is in a state of anxiety, they will be irritable or jittery.
If a person is in a state of unhappiness, they will be angry.
Those are the states & subsequent personalities that I’ve figured out so far.