A few things come to mind. Firstly no, No, NO you aren't those things. You are a worthwhile person and worthy of positivity - especially from yourself.

Am I correct in making the assumption you are a young adult?

Talk to someone. Your family doctor is a good place to start; a guidance counsellor at school if that applies. If you are the age I think you are you need not have parental involvement or approval to do so.

I went through a great deal of what you are feeling for 30 years before I got help. What grief and heartache I could have avoided had I done so early on. What helped? Finally talking to someone, getting a diagnosis, and putting my life on track. Medication has helped greatly, so has a great psychiatrist. But probably what has helped the most was a CBT (Cognitive Behavioural Therapy) program, the work for which I continue to do nearly everyday. These things - particularly the last - went far in improving my self worth. It gave me hope and confidence (in fact I am now making a plan to resume working and make some personal changes like a move with a 6 month target).

We are all rooting for you!