Can I change my personality?

Sure you can. You can change the way in which you think about things or how you act slowly over time. Cognitive behavioral therapy is the best route as it requires both the modification of your thoughts and behavior. It can be difficult to change certain elements of your personality depending on how strong they are. Falling back onto old habits after a while is also common, but doesn't represent a failure to change if you examine what caused you to fall back, and then make appropriate adjustments. But you also should be careful as it could harm you, depending on what you're trying to change.

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