Past, future, and NOW

Every time it stops being “now,” I get lousy on the viola. Every time I start thinking, “I did that already, I’ve got that,” or “I have to plan ahead for learning X,” it gets screechy and messy. The only time I am any good on the thing is when I pick it up and just concentrate on what I’m doing there and then. I guess this is part and parcel of not being “native” in an instrument.