How can i be successful in life when people only put me down and convince me that i'm not good enough?

You shouldn't listen to people who put you down, their the ones who aren't worth it, not you. The only person stopping yourself is you. If you have the determination to do it and you want it enough then you should. I haven't been to university but my sister is, and although she will have debt she has so much more to gain from it. When's she's finished she will have a real acheivement career wise, not to mention the self esteem boost at achieving a feat so great. She's made a good bunch of friends, met her boyfriend and gotten on really well. I think it is completly worth it. You've had a lot of bad luck but i do also believe that you make your own luck, to do that you have to create opportunity. I also think you need to see yourself as worth it, do something for yourself. Good luck.