I ended a friendship with a very toxic friend a few days ago and feel great about it. I don't miss her at all because she is a textbook narcissist (not just with me but with everyone in her life). She treated me like a doormat throughout our toxic friendship and I'd finally had enough and told her so, and told her that I didn't want to be friends her anymore. She didn't seem to care about the friendship ending either, so that showed me I made the right decision. There is nothing wrong with ending a friendship that is unhealthy. I don't know why U.S. culture puts so much emphasis on holding on to toxic relationships rather than be alone. I can't do that. I'd rather be alone and healthy and happy then surround myself with the wrong kind of people.