Setting the Bar

I think about that bar when it comes to pole vaulting. Where do you set it? I'm guessing pretty low to begin, and then as your skill set improves, higher and higher. In considering the way we as parents set bars, do we do the same thing? Do we set the bar at a reasonable level first, then as our children grow in skill, do we move the bar, perhaps with their input, so they have a new, higher aim?