Anxiety, or fear and worry, can happen to anyone from time to time, too. It’s not unusual to experience anxiety before a big event or important decision.
Depression: Feeling down, sad, or upset is normal. It can be concerning feeling that way for several days or weeks on end.
Some symptoms of depression and anxiety overlaps, such as problems with sleep, irritability, and difficulty concentrating. Read more about anxiety and depression from CDC.
Some self-help tests for anxiety and depression: