A subjective performance evaluation typically relates to intangible employee qualities and is based on subjective feedback from the manager as opposed to objective, measurable feedback.
In major depression, the most prominent symptom is a severe and persistent low mood, profound sadness, or a sense of despair. The mood can sometimes appear as irritability. Or the person suffering major depression may not be able to enjoy activities that are usually enjoyable.
Major or clinical depression is a serious but treatable illness. Depending on the severity of symptoms, your doctor may recommend treatment with an antidepressant medication. He or she may also suggest psychotherapy, or talk therapy, in which you address your emotional state.