Where you can, optimize at the level of the system, not the individual.

Optimizing at the individual level is easy.

The effects of your action are immediate and obvious, but low-leverage.

Optimizing at the level of the system is hard.

The effects of your action are diffuse and non-obvious, but extraordinarily high leverage.

Every action has effects at the individual and system level, even if you don't realize it.

For example, when optimizing for individual performance in teams you inadvertently select for super-chickens that destroy value around them.