Answer:
Everyone feels sad or blue, but if the feelings persist for longer than
two weeks, you should see a professional
Explanation:
It is part of the human nature to feel sand whenever we are passing through hard times, but when you can not go back to your usual self in a long time, a professional must make a study of possible depression, one of the first symptoms of it is feeling sad, with a constant sensation of loneliness and emptiness.
