But in fact that was catastrophic. Students got very discouraged very quickly. What seemed to be happening is you block out your day, and then a friend comes for coffee. The washing machine breaks down. An unexpected phone call just gets in the way, and you’re immediately running behind. So now what do you do? These students became very discouraged and they stopped working. Their study time was way down.
On the other hand, the students who were told to just set out their goals for the month did way better. I think that speaks to the idea that you need that degree of flexibility. It’s fine to have a goal in mind, but the moment I start blocking out particular bits of time, the whole thing doesn’t survive contact with reality and people get very disheartened.
--Tim Harford, Washington Post, on the value of schedules with give