In some ways, it depends what you want to do in psychology. Do you want to be a therapist, or would you prefer to do research? Do you want to become a professor, or go to medical school and become a doctor? All of these areas will have you interacting with people, but in very different ways. Therapists and doctors are taking care of people, whereas researchers are studying and learning about people (and usually welcoming them into the lab to do their studies). These professional interactions are different from simply socializing, but they do require warm interaction with others.
Other traits that are important are being hardworking and persistent, while also being able to admit when you are wrong. These traits will benefit you in almost any career. And, of course, you will be better in your career if you love what you are doing.