So I lost a friend recently. Not to death, thankfully. To my own assholish behaviour. Now I can accept that my friend doesn't forgive me. If the roles were reversed, I'd have done the same. I only ever talked about myself. Sure, I didn't know what else there was, since I didn't know any common interests, but all I had to do was ask. I'm not asking for advice on how to rebuild our friendship. It's over. And it's my fault. Nor am I asking about forming new ones. I have that information. It's not social or mental or moral advice I'm looking for.

I never did any giving in that friendship. And I wasn't even thinking about it at the time. How do I know I haven't been bringing others down too? What if my parents are right about me, that I am a narcissist?

@kamimatsu: A narcissist would never admit they could have been wrong, which you have done. They would also never believe the fault ever lay with them, which you have done.

You are no narcissist.