I spent over an hour trying to come up with a good answer to this question from Jim on balance:
"1.) At what point does balancing your play cause your play to become "poor"? i.e. How often do you give up some pre-flop equity for future consideration."
I was trying to construct an example of balancing your flop/turn play on a paired board when defending from the big blind and it got way too complicated.
And then I found this article today and didn't feel so bad.
I think this illustrates how complicated balancing can be and finding that exact point of perfect balance is extremely difficult.