This document summarizes some common psychological injuries including loneliness, failure, rejection, and rumination. It notes that loneliness can suppress the immune system and increase risk of early death, and that failure can cause one to function below their potential. For rejection, it says it damages self-esteem. Rumination is described as replaying upsetting events and can lead to conditions like depression. The document provides tips for dealing with each issue, such as taking action when lonely, stopping emotional bleeding after failure, protecting self-esteem after rejection, and battling negative thinking through distraction for rumination.