Depression has a different quality than the normal range of sadness that you may feel throughout the day. When you are depressed you do not feel like being with anybody. You either sleep way more than usual or you can hardly sleep at all. Similarly, your appetite is either nonexistent or increases dramatically. Your energy level goes way down and you have a feeling of hopelessness about life. As difficult as it may be it is important to get out of the house and get some help. You are not alone.