You can unfriend someone on Facebook with two clicks, and you also have the option to unfollow or block Facebook friends.

When you block someone on Facebook, you prevent them from messaging you, tagging you, and seeing your posts and profile.

"Talking only about yourself is another everyday behavior that pushes people away," says Dr. Stefanie Mazer, Psy.D., a Florida-based psychologist. "It may come from nerves or a desire to connect, but ...