Strategy is...

...this.

...informative of what to do.

...also informative of what NOT to do.

The average individual or organization is adept at applying strategy to what they decide to do.

The exceptional individual or organization excels at applying strategy as a filtration system of what not to do.

Strategy is every bit, and maybe even more so, about what is not done.  Of course, this is much tougher to grasp, because by definition what is not done is also not seen.

This means that recognizing the strategy of what is not done requires a reading between the lines.