That's what Gretchen Rubin is talking about today - in essence, the fact that even a very little thing makes a difference, for better or for worse, and the more 'little things' you do or don't do, the bigger that difference becomes.
Related to this is the idea of using interstitial time, and to not underestimating the impact that only a few moments spent on a task can have in moving towards completion, e.g. a two minute 'lick and a promise' with the duster or mop, or how a bit of preparation - setting yourself up ready for later - acts as a springboard to the main action. With all that in mind, I seem to have already accomplished quite a lot today and it's only half past ten!
PS. Just remembered this from Leonard Bernstein: "To achieve things, you need a plan and not quite enough time".