I didn't say that I couldn't do it - I said I didn't know, which is very different. I try because I want to do it, I don't know if I can, but I aim for something, to reach something at the end of it. I don't need to tell myself that I can do it because, if I don't know if I can, that is just a waste of time, and that sort of self confidence thing doesn't work for me. I try my hardest regardless, if I kept telling myself "You can do it, you can do it" I'd not only waste my time worrying, but it'd probably put more stress on me anyway.