Forget all the cliches about why we measure performance. 'You can't manage what you don't measure.' 'What you measure is what you get.' Why we measure performance is much more profound and fundamental.

Evidence-based leadership is not about how to lead. It's about what to give your attention to as you lead, and what you're leading your organisation to. It's not about how to communicate or inspire or direct or engage. It's about how to use all these attributes to lead your organisation to high-performance.

Problem: You have to sit down with your team, and work out your performance measures. You want it to be collaborative and fruitful, but you're dreading it because in the past it's generally been cumbersome and futile. Solution: You have to do something different.

We put so much effort into developing our performance measures (aka KPIs). It seems only natural to want them to be relevant and useful for a long time, to get the return on the effort we invested into their conception and implementation. So what is the ideal lifespan of a performance measure?