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 addition, according to the DSM-5 -- a manual used to diagnose mental health conditions -- you may have other symptoms with major depression. Those symptoms might include: Fatigue or loss of energy almost every day. Feelings of worthlessness or guilt almost every day.
Major depression: A disease with certain characteristic signs and symptoms that interferes with the ability to work, sleep, eat, and enjoy once pleasurable activities.