Being depressed is not about being sad. Being depressed is about being in a crowd full of people that care about you and feeling completely alone. It's about feeling so empty that you want to scream but you are just too miserable to open your mouth. It's about waking up and realizing you don't have a reason to leave your bed. It's about not being able to do anything without wondering why are you even doing it. Being depressed is not a mood, it's a disease.