http://www.martialdevelopment.com/blog/increase-your-power-by-improving-your-balance/

I like the quotes:

“it is easy to forget that the obstacles to perfect balance remain within ourselves.”

and

“you are probably making one of two fundamental mistakes:

  1. Using your opponent’s body to balance yourself; or
  2. Allowing your opponent to use your body in the same way. “

So true.  How interesting to hear it spoken in a context other than aikido.  Some truths are just that fundamental.