I know it seems like the least possible thing to do right now when you feel like this but try to think positive and to keep communicating about whats going on and how you feel. Think about the good things in your life. Your family/friends for example? Think how they would feel if you decided to give up on life? You also need to get some help of some sort to help you overcome these feelings and get your life back on track - maybe visiting your GP would help, or seeing a counsellor at university or something, even talking to someone you know and trust will help you because I'm sure they will encourage you and help you they will not judge you or condemn you for feeling this way. Please don't blame yourself for feeling this way - its entirely natural but it IS something you can fight your way out of. I and many others have felt the same and have started making the small and important steps to get out of the black hole - its different for everyone and I'm not a health professional of any sort so I can't give you any definitive advice but please try and think positive and talk to someone - you might be pleasantly surprised.
Take care x