Every time. Try to get ahead of your work? Well, good for you, that first 20% went really well, now let's spend the next two weeks on "work" that interferes with your other needs and needs to get thrown out because there's no way it's integrating with the other 80% that needs to happen within the next hour and also everything that you did for the other 20% is useless and needs to be redone now that you broke it with that tangent.

It's been a painful summer "preparing" to teach my fall courses.