Title: Personality Change | Psychology Today
Headings: 
Contents
How Flexible Is Your Personality?
Is it possible to change your personality?
Does personality change with age?
How much can a person change?
What causes a change in personality?
How is mental illness related to personality?
Can a brain injury change personality?
How to Change Your Personality
I want to be more extroverted. What should I do?
How can you change a negative personality?
How can I become more conscientious?
How can you tell whether your personality has changed?
Is it ever too late to change your personality?

Content: There is evidence, for example, that people who experience a serious head injury or stroke may show decreases in conscientiousness and extroversion. article continues after advertisement
How to Change Your Personality
Interventions designed to get people to behave differently—such as by introducing oneself to new people, showing up early to an event, or other challenges—have, at least in experiments, seemed to move the needle on measures of personality traits. But such efforts may need to be consistent and sustained for (at least) a matter of weeks. Psychotherapy also seems to have the power to create positive personality change. I want to be more extroverted. What should I do? Created with Sketch. Engaging in regular social "challenges" might help. Students who wanted to become more extroverted and completed two or more psychologist-devised challenges a week tended to show increases in their questionnaire scores on extroversion over the course of a semester. The exercises ranged from simple steps like saying hello to a cashier or waving to someone who lived nearby, to more involved ones such as going to a Meet Up event or organizing a social outing.