Tim Ferriss: The Magic Of The Imminent Deadline

If I give you 24 hours to complete a project, the time pressure forces you to focus on execution, and you have no choice but to do only the bare essentials. If I give you a week to complete the same task, it’s six days of making a mountain out of a molehill. If I give you two months, God forbid, it becomes a mental monster.

The end product of the shorter deadline is almost inevitably of equal or higher quality due to greater focus.