Focus

Start Task A; Work on Task A; Finish Task A;
Start Task B; Work on Task B; Finish Task B;
Start Task C... and so on.

That would be ideal.

vs. Start Task A; Check email; Work on Task A; Reply to email; Start Task B; Work on Task A; Work on Task B; Check news; Start instant message conversation; Check email; Start Task B (oops, I have already done that); Blog a bit; Finish Task A... and so on.

And, that is a skill that I need to pick up soon.