How can I feel happy again? Please Help!!!?

You do sound depressed, have you talked to your doc about referring you to a counsellor. It also sounds like you have a lot of time on your hands which makes you dwell on yourself and the hopelessness of everything. If you cant get a job at this time then try some voluntary work, it will fill your time and if you work with people worse off than you it will help put things into perspective.If you dont actively do something to help yourself now you will spend your life in a state of depression.