My Vision.
My vision is my definition of the musician I am trying to become.
It's written down. There's a copy in my notebook. I read it frequently, and update it as needed. (There's a recent version in the comments.) I will refer to it as long as I play music.
Everything is positive, in the first person, and the present tense, even things I haven't done yet, and even things that feel beyond my grasp at the moment. This creates a bias towards being active and being positive. I don't really know right now what is and isn't beyond my grasp, or where the line between the two will be a year from now. Things change, and practice makes you better.
It's optimistic; I find optimism to be more productive than any alternative to optimism. It documents where I am, what I have done so far, and what I can imagine myself doing.
It says, as clearly and in as much detail as possible, why I practice.