6. Mood Disorders
People with mood disorders tend to see things from a very bleak perspective. One of the most frequently diagnosed mood disorders is depression. People who are depressed have persistent feelings of sadness and hopelessness, and they tend to lose interest in life. Depending on the severity, depression can be very debilitating and interfere with everyday life. Regrettably, depression has a tendency to recur. However, it is treatable, especially through therapy with the possible need for medication in severe cases.