Time is a bad measurement for good work

If you have important work to do, which is better: 6 hours, or 12 hours?

• 6 hours: That’s a short day. If we only have 6 hours of focused work, with time to prepare and reflect on either side, can we be confident that those 6 hours will be well spent?
• 12 hours: That’s a long day. We won’t be productive for 12 hours straight, though, will we? Really? To celebrate 12 hour days is to celebrate inefficiency.

We can’t over-work ourselves with more hours, we can only make ourselves more inefficient. I prefer working efficiently, how about you?