I am very happy, and I just finished something.
Contrary to popular opinion, I think it is often necessary to just sit down and do something until it is finished, without thinking about anything else. Otherwise I lose my train of thought and spend a great deal of time retracing my steps.
I wonder whether the constant stream of advice telling us to do things in small increments of twenty-five minutes is just a plot to cause unproductive multitasking, and to convince us that we would not be overworked if we just knew how to manage things right.
Axé.
coldhearted scientist وداد 
I think it depends on the task. I spent practically all day yesterday on a project, but now I’m doing little bits of this and that.
Yes, it depends on the task. I suppose I mean it cannot all be done in little bits. This is not a defense of the burst of inspiration followed by the long fallow period – that I think only works rarely – but I’m for the little bits *and* the burst of inspiration, and I think there are some things, like house painting but also code hacking, that you have to stop everything else to do, or risk messing them up!
“I’m for the little bits *and* the burst of inspiration.” Yes. And, sometimes, the long slog of perspiration to finish out the vision of the inspiration, which also may need a long focused period of work. I’m still figuring out what I can do in little bits and what needs those long immersions in a project, but recognizing that I need both is important.