Oh also some knitters do this thing where the second you finish making one sock you cast on the second sock and do at least a few stitches so that you don't get killed by inertia and have one sock finished and one sock never started forever.
A while back there was a Tumblr post about doing the same thing while writing fiction - when you finish one chapter don't call it quits for the day, write a sentence or two if the next chapter do that you aren't starting from a blank page, you're continuing what you were doing before.
The same thing applies to work and homework and housework. If you finish your english homework *don't* decide that's the perfect moment to take a break, get out your algebra textbook and do a problem or two first.
Initiating tasks is a kind of executive function, but sometimes executive function is in short supply and you can bank some effort by continuing one task from another instead of having harsh breaks between tasks.