The way life works, efficiency and perfection run on a scale of diminishing returns. The returns do pile up but in an ever diminishing fashion. Perfection is the maximisation of the area of the curve.
Perfection has perhaps only one objective function to solve for. While life, and balance has many functions, and the objective is to find that balance which can maximise the area of many of those functions.
In practical terms it means listen to Pareto and what he perhaps distilled in his 80/20. In practical terms, it implies you may not be perfect in anything, but good in many many things.
Life is a multiple function thing at every now. You can still clear off some nows and focus only on one thing and aim for momentary perfection, but for most nows, one perhaps aims for balance.