I've had problems breaking into the 10's too but I mainly climb at Index and Leavenworth. This year I've really been working on and have sent Sag, Rattletale, Breakfast, ect. routinely. Have you tried these? If, not, I'd start with breakfast, then Sag, then Rattletale. I agree with much of what has been said- mainly mental, falls are more common. But I find the 10's super fun!