What does it happen when you have a depression?

Where as you might not have depression it does not mean you cant have a disorder! The insomnia you stated (lack of sleep) is a sign of Bi-polar disorder. but that doesn't make you bi-polar. I recommend talking to a LCSW (licensed Care Social Worker), Counselor, or psychiatrist! There are even free hotlines you can call if you feel depressed or even have anxiety! Self diagnosis isn't the answer!:D Professional help is always the best route! Even seeing your regular physician can help! They might be able to diagnose you themselves!

Well even i was same, but later i realised crying over problems is not going to make any change. Rather, i decided to fight against problems and now i feel great.

I eat a lot, I can sleep a lot or not sleep at all, I dont feel any pleasure doing things I used to love...