Oops... Anyway, I think it's still a mental game no matter how hard the route is. True that difficulty can seem to take over more at higher grades but it's even more mentally challenging to make your body go for worse moves on smaller/harder holds. For me what made a difference was climbing with people who would push me harder in a good way. Exapmle "Let's see who can redpoint 10 new 5.12s (or whatever) this season." To me it's more fun to try harder if you have a motivated partner. Oh yeah, real rock makes you climb harder. Gym 5.12 is way easier than rock 5.12, go outside more!