Picking the initial stocks? A company like Berkshire Hathaway run by Warren Buffet has a very low churn over the years, especially in their larger positions. The company has been sitting on 400,000,000 shares of Coca-Cola since the late 80s, never selling a single share.

Guards standing at the gate also do nothing 99% of the time.

Good sysadmins as well.

It is such a cool principle. I think it can be extended to all manner of fields. As a process engineer, I am convinced that the best machine operators are the ones actively doing nothing. The active bit is key: they must be alert, watchful, understanding, and for-God's-sake don't push nothing unless you need to.

Somewhere along the way operators think that if they don't push a button every fifteen minutes they aren't earning their pay (I blame bad management and production pressure). So when in doubt, look busy. It has awful and confusing effects on processes, leading to long term hard-to-diagnose noise in otherwise stable systems.

I think the same principle applies here. We want vigilant, patient, and wise did managers. Not just super active and excitable ones.